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1
CAVEAT
1
CAVEAT
@ -1 +0,0 @@
|
||||
The contract is intended for slow rates of decay (e.g. 2% per month). Very high levels of decay (2% per minute) will lead to overflows, and will need a more flexible implementation to support it.
|
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10
Makefile
10
Makefile
@ -1,10 +0,0 @@
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||||
all: python solidity doc
|
||||
python:
|
||||
make -C python
|
||||
solidity:
|
||||
make -C solidity
|
||||
doc:
|
||||
make -C doc/texinfo
|
||||
readme:
|
||||
make -C doc/texinfo readme
|
||||
pandoc -f docbook -t gfm doc/texinfo/build/docbook.xml > README.md
|
||||
448
README.md
448
README.md
@ -1,405 +1,95 @@
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# Overview
|
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# RedistributedDemurrageToken
|
||||
|
||||
de-mur-rage
|
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**this documentation is obsolete, will rewrite asap**
|
||||
|
||||
1: the detention of a ship by the freighter beyond the time allowed for loading, unloading, or sailing
|
||||
|
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2: a charge for detaining a ship, freight car, or truck
|
||||
|
||||
This ERC20 smart contract implementation for the EVM imposes a demurrage
|
||||
on all held token balances.
|
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|
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The demurrage is a continuous value *decay*, subtracted from all
|
||||
balances every minute.
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||||
|
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Also. a time period is defined at contract creation time at which the
|
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difference between held balances and the demurrage can be withdrawn to a
|
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pre-selected address, which in turn can redistribute that token value.
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In short: Everyone is taxed a little something every minute, and every
|
||||
so often a decision is made on how to redistribute that tax.
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## Features
|
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|
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- Continuous decay of all balances.
|
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|
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- Capture and redistribution of decayed balances.
|
||||
|
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- Per-minute decay resolution.
|
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|
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- Minting and burning of vouchers.
|
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|
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- Grant and revoke access to mint and burn vouchers.
|
||||
|
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- Voucher expiration (modifiable anytime after publishing).
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|
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- Supply cap (modifiable anytime after publishing).
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|
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- Constant gas usage across exponential calculations.
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## Use Case
|
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* Network / Basic Income Token
|
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* 100 Sarafu is distributed to anyone in Kenya after user validation by the owner of a faucet which mints new Sarafu.
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* Validated users are those that validate their phone number in Kenya.
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* A Sarafu holding tax aka ([demurrage](https://en.wikipedia.org/wiki/Demurrage_(currency))) of 0.000050105908373373% is charged from users per minute - such that over 1 month to total tax would be 2%.
|
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* After 1 week the total amount tax is distributed evenly out to _active_ users.
|
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* any single transaction by a user within that week is considered _active_ (heartbeat)
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* This is meant to result in a disincentivization to hold (hodl) the Sarafu token and increase its usage as a medium of exchange rather than a store of value.
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* This token can be added to liquidity pools with other ERC20 tokens and or Community Inclusion Currencies (CICs) - and thereby act as a central network token and connect various tokens and CICs together.
|
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* Example
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- With a demurrage of 2% (net per month) and a reward period of 1 month - If there are 10 users all with balances of 1000 Sarafu and only 2 of them trade that month (assume they trade back and forth with no net balance change).
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- Then the resulting balances after one tax period of those two trading would be 1080 Sarafu while the remaining non-active users would be 980 Sarafu. If this behaviour continued in the next tax period, with the same two users only trading (with no net balance changes), they would have 1158.39999968 Sarafu and those users that are not trading would have their balances further reduced to 960.40 Sarafu. If this continued on ~forever those two active trading users would have the entire token supply and the non-trading users would eventually reach a zero balance.
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- this example calculation for 3 tax periods can be found here: https://gitlab.com/grassrootseconomics/cic-docs/-/blob/master/demurrage-redist-sarafu.ods
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|
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## Nomenclature
|
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|
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‘`Demurrage`’
|
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A percentage of token supply that will continuously be removed.
|
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* `Demurrage` aka Decay amount: A percentage of token supply that will be charged once per minute and evenly redistributed to _active_ users every Demurrage Period (minutes)
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* Base balance: The inflated balance of each user is stored for bookkeeping.
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* Sink Token Address: Rounding errors and if no one trades the tax goes to this address
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* Demurrage Period (minutes)- aka `period`: The number of minutes over which a user must be _active_ to receive tax-redistibution.
|
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|
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‘`Demurrage Period`’
|
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A period of time denominated in minutes after which demurraged amounts
|
||||
are available for redistribution.
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|
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‘`Sink Account`’
|
||||
The intermediate beneficiary of the demurraged amount, which may or may
|
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not redistribute value.
|
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## Ownership
|
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|
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‘`Base balance`’
|
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The inflated balance of each used which is stored for bookkeeping.
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* Contract creator is owner
|
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* Ownership can be transferred
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# Use Case
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The use-case inspiring this implementation is in the context of issuance
|
||||
of a *voucher* representing a credit obligation of an *Issuer* or
|
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*Association of Issuers*.
|
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## Mint
|
||||
|
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This voucher can be redeemed as payment for the products of the Issuer.
|
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* Owner can add minters and remove
|
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- A faucet contract would be a minter and choose the amount of tokens to mint and distribute to new _validated_ users.
|
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- The interface says the amount and is at the caller's discretion per contract call. _validation_ is outside of this contract.
|
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* A minter can remove itself
|
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* Minters can mint any amount
|
||||
|
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The Issuer is the entity legally obligated to redeem the voucher as
|
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payment.
|
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|
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Introducing demurrage on this vehicle discourages *withholding* the
|
||||
voucher, for example for speculative advantage.
|
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## Demurrage
|
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* Holding Tax (`demurrage`) is applied when a **mint** or **transfer**; (it can also be triggered explicitly)
|
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- Note that the token supply _stays the same_ but a virtual _balance output_ is created.
|
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- Updates `demurrageModifier` which represents the accumulated tax value and is an exponential decay step (of size `demurrage`) for each minute that has passed.
|
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- `demurrageModifier = (1-demurrage)^(minute_passed)`
|
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- e.g. a `demurrage` of 2% after the 1st minute would be give a `demurrageModifier = (1-0.02)^1 = 0.98`.
|
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- e.g. a `demurrage` after the 2nd minute would be give a `demurrageModifier = (1-0.02)^2 = 0.9604`.
|
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* All client-facing values (_balance output_ , _transfer inputs_) are adjusted with `demurrageModifier`.
|
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- e.g. `_balance output_ = user_balance - user_balance * demurrageModifier`
|
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|
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This also encourages increased *velocity* of voucher use.
|
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## Example
|
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## Redistribution
|
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|
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Given:
|
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* One redistribution entry is added to storage for each `period`;
|
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- When `mint` is triggered, the new totalsupply is stored to the entry
|
||||
- When `transfer` is triggered, and the account did not yet participate in the `period`, the entry's participant count is incremented.
|
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* Account must have "participated" in a period to be redistribution beneficiary.
|
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* Redistribution is applied when an account triggers a **transfer** for the first time in a new `period`;
|
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- Check if user has participated in `period`. (_active_ user heartbeat)
|
||||
- Each _active_ user balance in the `period` is increased by `(total supply at end of period * demurrageModifier ) / number_of_active_participants` via minting
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||||
- Participation field is zeroed out for that user.
|
||||
* Fractions must be rounded down
|
||||
- Remainder is "dust" and should be sent to a dedicated Sink Token Address.
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- If no one is _active_ all taxes go to the Sink Token Address.
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- 10 voucher holders.
|
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|
||||
- A total supply of 1000 tokens.
|
||||
## Data structures
|
||||
|
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- Demurrage of 2% per 30 days (43200 minutes).
|
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* One word per `account`:
|
||||
- bits 000-071: value
|
||||
- bits 072-103: period
|
||||
- bits 104-255: (Unused)
|
||||
* One word per `redistributions` period:
|
||||
- bits 000-031: period
|
||||
- bits 032-103: supply
|
||||
- bits 104-139: participant count
|
||||
- bits 140-159: demurrage modifier
|
||||
- bits 160-254: (Unused)
|
||||
- bits 255: Set if individual redistribution amounts are fractions
|
||||
|
||||
- Redistribution period of 30 days (43200 minutes).
|
||||
### Notes
|
||||
|
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If no trades are made, the resulting balances after one redistribution
|
||||
period of every user would be 98 Vouchers.
|
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Accumulated demurrage modifier in `demurrageModifier` is 128 bit, but will be _truncated_ do 20 bits in `redistributions`. The 128 bit resolution is to used to reduce the impact of fractional drift of the long-term accumulation of the demurrage modifier. However, the demurrage snapshot values used in `redistributions` are parts-per-million and can be fully contained within a 20-bit value.
|
||||
|
||||
The Sink Address will have a balance of 20 vouchers after the same
|
||||
period.
|
||||
|
||||
Note that after the redistribution the total of all balances will equal
|
||||
the total minted amount.
|
||||
## QA
|
||||
|
||||
Note that all accounts holding such vouchers are effected by demurrage
|
||||
(even the Sink Account, pending redistribution).
|
||||
* Basic python tests in place
|
||||
* How to determine and generate sufficient test vectors, and how to adapt them to scripts.
|
||||
* Audit sources?
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|
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# Smart contract
|
||||
## Known issues
|
||||
|
||||
## Common interfaces
|
||||
|
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The smart contract is written in solidity, compatible with 0.8.x.
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|
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It implements a number of interfaces both from the Ethereum (ERC)
|
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standards aswell as the Community Inclusion Currency contract interface
|
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suite.
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|
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### ERC standard interfaces
|
||||
|
||||
- [ERC20 - Token Standard](https://eips.ethereum.org/EIPS/eip-20)
|
||||
|
||||
- [ERC165 - Standard Interface
|
||||
Detection](https://eips.ethereum.org/EIPS/eip-165)
|
||||
|
||||
- [ERC173 - Contract Ownership
|
||||
Standard](https://eips.ethereum.org/EIPS/eip-173)
|
||||
|
||||
- [ERC5679 - Token Minting and Burning (as part of CIC.Minter and
|
||||
CIC.Burner)](https://eips.ethereum.org/EIPS/eip-5679)
|
||||
|
||||
### CIC interfaces
|
||||
|
||||
- [Burner](https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Burner.sol)
|
||||
|
||||
- [Expire](https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Expire.sol)
|
||||
|
||||
- [Minter](https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Minter.sol)
|
||||
|
||||
- [Seal](https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Seal.sol)
|
||||
|
||||
- [Writer](https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Writer.sol)
|
||||
|
||||
## Dependencies
|
||||
|
||||
The token contract uses the
|
||||
[ADBKMath](https://github.com/abdk-consulting/abdk-libraries-solidity/blob/master/ABDKMath64x64.sol)
|
||||
library to calculate exponentials.
|
||||
|
||||
## Permissions
|
||||
|
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The smart contract defines three levels of access.
|
||||
|
||||
1. Voucher contract owner
|
||||
|
||||
2. Voucher minter
|
||||
|
||||
3. Voucher holder
|
||||
|
||||
### Contract owner
|
||||
|
||||
When the contract is published to the network, the signer account of the
|
||||
publishing transaction will be the contract owner.
|
||||
|
||||
Contract ownership can be changed by the owner using the **ERC173**
|
||||
standard interface.
|
||||
|
||||
### Minter
|
||||
|
||||
A minter has access to mint vouchers, and to burn vouchers from its own
|
||||
balance.
|
||||
|
||||
Only the contract owner may mint, and may add and remove minters.
|
||||
Minters may be added and removed using the **CIC Writer** interface, as
|
||||
long as the `WRITER_STATE` seal is not set. See [Sealing the
|
||||
contract](#seal_005fstate) for further details.
|
||||
|
||||
The contract owner is automatically a minter.
|
||||
|
||||
### Holder
|
||||
|
||||
Any address may hold vouchers, and transfer vouchers from their balance.
|
||||
|
||||
Minters and the contract owner are automatically token holders.
|
||||
|
||||
All token holders are subject to demurrage.
|
||||
|
||||
## Publishing the contract
|
||||
|
||||
The contract is published with the following arguments:
|
||||
|
||||
‘`name`’
|
||||
ERC20 voucher name
|
||||
|
||||
‘`symbol`’
|
||||
ERC20 voucher symbol
|
||||
|
||||
‘`decimals`’
|
||||
ERC20 decimal count
|
||||
|
||||
‘`decayLevel`’
|
||||
Level of decay per minute. See [Specifying
|
||||
demurrage](#specifying_005fdemurrage) below for further details.
|
||||
|
||||
‘`periodMinutes`’
|
||||
Number of minutes between each time the demurraged value can be
|
||||
withdrawn to the *Sink Account*. See [Withdrawing demurraged
|
||||
value](#withdrawing) below for further details. The period may not be
|
||||
altered.
|
||||
|
||||
‘`defaultSinkAddress`’
|
||||
The initial *Sink Address*. The address may be altered as long as the
|
||||
`SINK_STATE` seal has not been set. See [Sealing the
|
||||
contract](#seal_005fstate) for further details.
|
||||
|
||||
### Specifying demurrage
|
||||
|
||||
The *input parameter* to the contract is a 128-bit positive fixed-point
|
||||
number, where the most significant 64 bits represent the integer part,
|
||||
and the lower 64 bits represents the decimals part, each consecutive
|
||||
lesser bit halving the value of the previous bit.
|
||||
|
||||
For example, The byte value `00000000 00000002 a0000000 00000000`,
|
||||
representing a zero-stripped binary value of $10.101$. This translates
|
||||
to the (base 10) decimal value $2.625$. The decimal part is calculated
|
||||
as, from left to right: $(1 * 0.5) + (0 * 0.25) + (1 * 0.125)$.
|
||||
|
||||
#### Calculating the demurrage parameter
|
||||
|
||||
The minute granularity of the demurrage value is calculating using the
|
||||
continuous decay function.
|
||||
|
||||
For example, for a demurrage of 2% per 30 days (43200 minutes), the
|
||||
input value will be:
|
||||
|
||||
$(1-0.02)^(1/43200) ~ 0.99999953234484737109$
|
||||
|
||||
The decimal part of the fixed-point representation of this value is:
|
||||
|
||||
`fffff8276fb8cfff`
|
||||
|
||||
The input parameter becomes:
|
||||
|
||||
`0000000000000000ffffa957014dc7ff`
|
||||
|
||||
See [Tools](#tools) for additional help generating the necessary values.
|
||||
|
||||
Note that attempting to publish a voucher contract with no (zero)
|
||||
demurrage will fail (if demurrage is not needed, use another contract).
|
||||
|
||||
## Using the contract
|
||||
|
||||
### Withdrawing demurrage
|
||||
|
||||
After each redistribution period, the demurraged value of that period
|
||||
can be withdrawn to the currently defined *Sink Account*.
|
||||
|
||||
The demurrage is calculated as from the total supply of voucher at the
|
||||
end of the period.
|
||||
|
||||
Withdrawal should happen implicitly duing normal operation of the
|
||||
contract. See [Side-effects in state changes](#sideeffects).
|
||||
|
||||
To explicitly credit the *Sink Address* with the demurrage value after a
|
||||
period has been exceeded, the `changePeriod()` (`8f1df6bc`) method can
|
||||
be called.
|
||||
|
||||
### Setting voucher expiry
|
||||
|
||||
The effect of a voucher expiring is that all balances will be frozen,
|
||||
and all state changes affecting token balances will be blocked.
|
||||
|
||||
Expiry is defined in terms of redistribution periods. For example, if
|
||||
the redistribution period is 30 days, and the expity is 3, then the
|
||||
voucher expires after 90 days.
|
||||
|
||||
The expiry takes effect immediately when the redistribution period time
|
||||
has been exceeded.
|
||||
|
||||
When the contract is published, no expiry is set.
|
||||
|
||||
Expiry may be set after publishing using the `CIC.Expire` interface.
|
||||
|
||||
If the `EXPIRE_STATE` seal has been set, expiry may not be changed
|
||||
further.
|
||||
|
||||
### Capping voucher supply
|
||||
|
||||
The effect of a voucher supply cap is that all `CIC.Minter` calls will
|
||||
fail if the total supply after minting exceeds the defined supply cap.
|
||||
|
||||
The supply cap still allows vouchers to be minted after `CIC.Burn`
|
||||
calls, provided that the previous condition holds.
|
||||
|
||||
To apply the supply cap, the method `setMaxSupply(uint256) (6f8b44b0)`
|
||||
is used.
|
||||
|
||||
### Side-effects in state changes
|
||||
|
||||
All state changes involving voucher values implicitly execute two core
|
||||
methods to ensure application of the demurrage and redistribution.
|
||||
|
||||
The two methods are:
|
||||
|
||||
`applyDemurrage() (731f237c)`
|
||||
Calculates the demurrage modifier of all balances according to the
|
||||
current timestamp.
|
||||
|
||||
`changePeriod() (8f1df6bc)`
|
||||
If the previously executed period change does not match the current
|
||||
period, the period is changed, and the *Sink Address* is credited with
|
||||
the demurrage amount of the current total supply.
|
||||
|
||||
Both of these methods are *noop* if no demurrage or withdrawal is
|
||||
pending, respectively.
|
||||
|
||||
Examples of state changes that execute these methods include
|
||||
`ERC20.transfer(...)`, `ERC20.transferFrom(...)` and `CIC.mintTo(...)`.
|
||||
|
||||
### Sealing the contract
|
||||
|
||||
Certain mutable core parameters of the contract can be *sealed*, meaning
|
||||
prevented from being modifier further.
|
||||
|
||||
Sealing is executed using the `CIC.Seal` interface.
|
||||
|
||||
The sealing of parameters is irreversible.
|
||||
|
||||
The sealable parameters are[^1]:
|
||||
|
||||
`WRITER_STATE`
|
||||
The `CIC.Writer` interface is blocked. The effect of this is that no
|
||||
more changes may be made to which accounts have minter permission.
|
||||
|
||||
`SINK_STATE`
|
||||
After setting this seal, the *Sink Address* may not be changed.
|
||||
|
||||
`EXPIRY_STATE`
|
||||
Prevents future changes to the voucher expiry date[^2].
|
||||
|
||||
`CAP_STATE`
|
||||
Immediately prevents future voucher minting, regardless of permissions.
|
||||
|
||||
## Gas usage
|
||||
|
||||
Gas usage is constant regardless of the amount of time passed between
|
||||
each execution of demurrage and redistribution period calculations.
|
||||
|
||||
## Caveats
|
||||
|
||||
A `ERC20.transferFrom(...)` following an `ERC20.approve(...)` call, when
|
||||
called across period thresholds, may fail if margin to demurraged amount
|
||||
is insufficient.
|
||||
|
||||
# Tools
|
||||
|
||||
When installed as a python package, `erc20-demurrage-token` installs the
|
||||
`erc20-demurrage-token-publish` executable script, which can be used to
|
||||
publish smart contract instances.
|
||||
|
||||
While the man page for the tool can be referred to for general
|
||||
information of the tool usage, two argument flags warrant special
|
||||
mention in the context of this documentation.
|
||||
|
||||
`--demurrage-level`
|
||||
The percentage of demurrage in terms of the redistribution period,
|
||||
defined as parts-per-million.
|
||||
|
||||
`--redistribution-period`
|
||||
A numeric value denominated in *minutes* to define the redistribution
|
||||
period of the voucher demurrage.
|
||||
|
||||
For example, to define a 2% demurrage value for a redistribution period
|
||||
of 30 days (43200 minutes), the argument to the argument flags would be:
|
||||
|
||||
erc20-demurrage-token-publish --demurrage-level 20000 --redistribution-period 43200 ...
|
||||
|
||||
## Calculating fixed-point values
|
||||
|
||||
The `erc20-demurrage-token` package installs the python package `dexif`
|
||||
as part of its dependencies.
|
||||
|
||||
This package in turn provides an epinymous command-line tool (`dexif`)
|
||||
which converts decimal values to a 128-bit fixed-point value expected by
|
||||
the contract constructor.
|
||||
|
||||
An example:
|
||||
|
||||
$ dexif 123.456
|
||||
7b74bc6a7ef9db23ff
|
||||
|
||||
$ dexif -x 7b74bc6a7ef9db23ff
|
||||
123.456
|
||||
|
||||
## Contract interaction with chainlib-eth
|
||||
|
||||
All smart contract tests are implementing using
|
||||
[chainlib-eth](https://git.defalsify.org/chainlib-eth) from the
|
||||
chaintool suite.
|
||||
|
||||
The `eth-encode` tool from the `chainlib-eth` python package may be a
|
||||
convenient way to interact with contract features.
|
||||
|
||||
Some examples include:
|
||||
|
||||
# explicitly call changePeriod()
|
||||
$ eth-encode --mode tx --signature changePeriod -e <contract_address> -y <key_file> ...
|
||||
|
||||
# Set the sink address seal (The integer value of the SINK_STATE flag is 2 at the time of writing)
|
||||
$ eth-encode --mode tx --signature seal -e <contract_address> -y <key_file> ... u:2
|
||||
|
||||
# Query current sink address of contract
|
||||
$ eth-encode --mode call --signature sinkAddress -e <contract_address> ...
|
||||
|
||||
[^1]: Please refer to the contract source code for the numeric values of
|
||||
the state flags
|
||||
|
||||
[^2]: The `EXPIRY_STATE` is implicitly set after expiration.
|
||||
* A `transferFrom` following an `approve` call, when called across period thresholds, may fail if margin to demurraged amount is insufficient.
|
||||
|
||||
8
ROADMAP
8
ROADMAP
@ -1,8 +0,0 @@
|
||||
- 0.1.3
|
||||
* Snapshot supply for crossed redistribution thresholds before minting new tokens.
|
||||
- 0.1.4
|
||||
* Implement natural logarithm
|
||||
- 0.1.5
|
||||
* Port changes from SingleNocap to SingleCap
|
||||
- 0.2.0
|
||||
* Make decay resolutions configurable, to support high levels of decay.
|
||||
@ -1,4 +0,0 @@
|
||||
doc:
|
||||
makeinfo --html -o build index.texi
|
||||
readme:
|
||||
makeinfo --docbook -o build/docbook.xml index.texi
|
||||
@ -1,221 +0,0 @@
|
||||
@node contract
|
||||
@chapter Smart contract
|
||||
|
||||
|
||||
@section Common interfaces
|
||||
|
||||
The smart contract is written in solidity, compatible with 0.8.x.
|
||||
|
||||
It implements a number of interfaces both from the Ethereum (ERC) standards aswell as the Community Inclusion Currency contract interface suite.
|
||||
|
||||
|
||||
|
||||
@subsection ERC standard interfaces
|
||||
|
||||
@itemize @bullet
|
||||
@item
|
||||
@uref{https://eips.ethereum.org/EIPS/eip-20, ERC20 - Token Standard}
|
||||
@item
|
||||
@uref{https://eips.ethereum.org/EIPS/eip-165, ERC165 - Standard Interface Detection}
|
||||
@item
|
||||
@uref{https://eips.ethereum.org/EIPS/eip-173, ERC173 - Contract Ownership Standard}
|
||||
@item
|
||||
@uref{https://eips.ethereum.org/EIPS/eip-5679, ERC5679 - Token Minting and Burning (as part of CIC.Minter and CIC.Burner)}
|
||||
@end itemize
|
||||
|
||||
@subsection CIC interfaces
|
||||
|
||||
@itemize @bullet
|
||||
@item
|
||||
@uref{https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Burner.sol, Burner}
|
||||
@item
|
||||
@uref{https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Expire.sol, Expire}
|
||||
@item
|
||||
@uref{https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Minter.sol, Minter}
|
||||
@item
|
||||
@uref{https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Seal.sol, Seal}
|
||||
@item
|
||||
@uref{https://git.grassecon.net/cicnet/cic-contracts/src/branch/master/solidity/Writer.sol, Writer}
|
||||
@end itemize
|
||||
|
||||
|
||||
@section Dependencies
|
||||
|
||||
The token contract uses the @url{https://github.com/abdk-consulting/abdk-libraries-solidity/blob/master/ABDKMath64x64.sol, ADBKMath} library to calculate exponentials.
|
||||
|
||||
|
||||
@section Permissions
|
||||
|
||||
The smart contract defines three levels of access.
|
||||
|
||||
@enumerate
|
||||
@item Voucher contract owner
|
||||
@item Voucher minter
|
||||
@item Voucher holder
|
||||
@end enumerate
|
||||
|
||||
|
||||
@subsection Contract owner
|
||||
|
||||
When the contract is published to the network, the signer account of the publishing transaction will be the contract owner.
|
||||
|
||||
Contract ownership can be changed by the owner using the @strong{ERC173} standard interface.
|
||||
|
||||
|
||||
@subsection Minter
|
||||
|
||||
A minter has access to mint vouchers, and to burn vouchers from its own balance.
|
||||
|
||||
Only the contract owner may mint, and may add and remove minters. Minters may be added and removed using the @strong{CIC Writer} interface, as long as the @code{WRITER_STATE} seal is not set. @xref{seal_state, Sealing the contract} for further details.
|
||||
|
||||
The contract owner is automatically a minter.
|
||||
|
||||
|
||||
@subsection Holder
|
||||
|
||||
Any address may hold vouchers, and transfer vouchers from their balance.
|
||||
|
||||
Minters and the contract owner are automatically token holders.
|
||||
|
||||
All token holders are subject to demurrage.
|
||||
|
||||
|
||||
@section Publishing the contract
|
||||
|
||||
The contract is published with the following arguments:
|
||||
|
||||
@table @samp
|
||||
@item name
|
||||
ERC20 voucher name
|
||||
@item symbol
|
||||
ERC20 voucher symbol
|
||||
@item decimals
|
||||
ERC20 decimal count
|
||||
@item decayLevel
|
||||
Level of decay per minute. @xref{specifying_demurrage, Specifying demurrage} below for further details.
|
||||
@item periodMinutes
|
||||
Number of minutes between each time the demurraged value can be withdrawn to the @emph{Sink Account}. @xref{withdrawing, Withdrawing demurraged value} below for further details. The period may not be altered.
|
||||
@item defaultSinkAddress
|
||||
The initial @emph{Sink Address}. The address may be altered as long as the @code{SINK_STATE} seal has not been set. @xref{seal_state, Sealing the contract} for further details.
|
||||
@end table
|
||||
|
||||
|
||||
@node specifying_demurrage
|
||||
@subsection Specifying demurrage
|
||||
|
||||
The @emph{input parameter} to the contract is a 128-bit positive fixed-point number, where the most significant 64 bits represent the integer part, and the lower 64 bits represents the decimals part, each consecutive lesser bit halving the value of the previous bit.
|
||||
|
||||
For example, The byte value @code{00000000 00000002 a0000000 00000000}, representing a zero-stripped binary value of @math{10.101}. This translates to the (base 10) decimal value @math{2.625}. The decimal part is calculated as, from left to right: @math{(1 * 0.5) + (0 * 0.25) + (1 * 0.125)}.
|
||||
|
||||
@subsubsection Calculating the demurrage parameter
|
||||
|
||||
The minute granularity of the demurrage value is calculating using the continuous decay function.
|
||||
|
||||
For example, for a demurrage of 2% per 30 days (43200 minutes), the input value will be:
|
||||
|
||||
@math{(1-0.02)^(1/43200) ~ 0.99999953234484737109}
|
||||
|
||||
The decimal part of the fixed-point representation of this value is:
|
||||
|
||||
@code{fffff8276fb8cfff}
|
||||
|
||||
The input parameter becomes:
|
||||
|
||||
@code{0000000000000000ffffa957014dc7ff}
|
||||
|
||||
@xref{tools, Tools} for additional help generating the necessary values.
|
||||
|
||||
Note that attempting to publish a voucher contract with no (zero) demurrage will fail (if demurrage is not needed, use another contract).
|
||||
|
||||
|
||||
@section Using the contract
|
||||
|
||||
@node withdrawing
|
||||
@subsection Withdrawing demurrage
|
||||
|
||||
After each redistribution period, the demurraged value of that period can be withdrawn to the currently defined @emph{Sink Account}.
|
||||
|
||||
The demurrage is calculated as from the total supply of voucher at the end of the period.
|
||||
|
||||
Withdrawal should happen implicitly duing normal operation of the contract. @xref{sideeffects, Side-effects in state changes}.
|
||||
|
||||
To explicitly credit the @emph{Sink Address} with the demurrage value after a period has been exceeded, the @code{changePeriod()} (@code{8f1df6bc}) method can be called.
|
||||
|
||||
|
||||
@node expiry
|
||||
@subsection Setting voucher expiry
|
||||
|
||||
The effect of a voucher expiring is that all balances will be frozen, and all state changes affecting token balances will be blocked.
|
||||
|
||||
Expiry is defined in terms of redistribution periods. For example, if the redistribution period is 30 days, and the expity is 3, then the voucher expires after 90 days.
|
||||
|
||||
The expiry takes effect immediately when the redistribution period time has been exceeded.
|
||||
|
||||
When the contract is published, no expiry is set.
|
||||
|
||||
Expiry may be set after publishing using the @code{CIC.Expire} interface.
|
||||
|
||||
If the @code{EXPIRE_STATE} seal has been set, expiry may not be changed further.
|
||||
|
||||
|
||||
@node supply
|
||||
@subsection Capping voucher supply
|
||||
|
||||
The effect of a voucher supply cap is that all @code{CIC.Minter} calls will fail if the total supply after minting exceeds the defined supply cap.
|
||||
|
||||
The supply cap still allows vouchers to be minted after @code{CIC.Burn} calls, provided that the previous condition holds.
|
||||
|
||||
To apply the supply cap, the method @code{setMaxSupply(uint256) (6f8b44b0)} is used.
|
||||
|
||||
|
||||
@node sideeffects
|
||||
@subsection Side-effects in state changes
|
||||
|
||||
All state changes involving voucher values implicitly execute two core methods to ensure application of the demurrage and redistribution.
|
||||
|
||||
The two methods are:
|
||||
|
||||
@table @code
|
||||
@item applyDemurrage() (731f237c)
|
||||
Calculates the demurrage modifier of all balances according to the current timestamp.
|
||||
@item changePeriod() (8f1df6bc)
|
||||
If the previously executed period change does not match the current period, the period is changed, and the @emph{Sink Address} is credited with the demurrage amount of the current total supply.
|
||||
@end table
|
||||
|
||||
Both of these methods are @emph{noop} if no demurrage or withdrawal is pending, respectively.
|
||||
|
||||
Examples of state changes that execute these methods include @code{ERC20.transfer(...)}, @code{ERC20.transferFrom(...)} and @code{CIC.mintTo(...)}.
|
||||
|
||||
|
||||
@node seal_state
|
||||
@subsection Sealing the contract
|
||||
|
||||
Certain mutable core parameters of the contract can be @emph{sealed}, meaning prevented from being modifier further.
|
||||
|
||||
Sealing is executed using the @code{CIC.Seal} interface.
|
||||
|
||||
The sealing of parameters is irreversible.
|
||||
|
||||
The sealable parameters are@footnote{Please refer to the contract source code for the numeric values of the state flags}:
|
||||
|
||||
@table @code
|
||||
@item WRITER_STATE
|
||||
The @code{CIC.Writer} interface is blocked. The effect of this is that no more changes may be made to which accounts have minter permission.
|
||||
@item SINK_STATE
|
||||
After setting this seal, the @emph{Sink Address} may not be changed.
|
||||
@item EXPIRY_STATE
|
||||
Prevents future changes to the voucher expiry date@footnote{The @code{EXPIRY_STATE} is implicitly set after expiration.}.
|
||||
@item CAP_STATE
|
||||
Immediately prevents future voucher minting, regardless of permissions.
|
||||
@end table
|
||||
|
||||
|
||||
@section Gas usage
|
||||
|
||||
Gas usage is constant regardless of the amount of time passed between each execution of demurrage and redistribution period calculations.
|
||||
|
||||
|
||||
@section Caveats
|
||||
|
||||
A @code{ERC20.transferFrom(...)} following an @code{ERC20.approve(...)} call, when called across period thresholds, may fail if margin to demurraged amount is insufficient.
|
||||
|
||||
@ -1,29 +0,0 @@
|
||||
\input texinfo
|
||||
@settitle ERC20 Demurrage Token
|
||||
|
||||
@copying
|
||||
Released 2023 under AGPL3
|
||||
@end copying
|
||||
|
||||
@titlepage
|
||||
@title ERC20 Demurrage Token
|
||||
@author Louis Holbrook
|
||||
|
||||
@end titlepage
|
||||
|
||||
@c
|
||||
@contents
|
||||
|
||||
@ifnottex
|
||||
@node Top
|
||||
@top Introduction
|
||||
@end ifnottex
|
||||
@menu
|
||||
* overview ::
|
||||
* instructions :
|
||||
@end menu
|
||||
|
||||
@include overview.texi
|
||||
@include usecase.texi
|
||||
@include contract.texi
|
||||
@include tools.texi
|
||||
@ -1,47 +0,0 @@
|
||||
@node overview
|
||||
@chapter Overview
|
||||
|
||||
@verbatim
|
||||
de-mur-rage
|
||||
|
||||
1: the detention of a ship by the freighter beyond the time allowed for loading, unloading, or sailing
|
||||
|
||||
2: a charge for detaining a ship, freight car, or truck
|
||||
@end verbatim
|
||||
|
||||
This ERC20 smart contract implementation for the EVM imposes a demurrage on all held token balances.
|
||||
|
||||
The demurrage is a continuous value @emph{decay}, subtracted from all balances every minute.
|
||||
|
||||
Also. a time period is defined at contract creation time at which the difference between held balances and the demurrage can be withdrawn to a pre-selected address, which in turn can redistribute that token value.
|
||||
|
||||
In short: Everyone is taxed a little something every minute, and every so often a decision is made on how to redistribute that tax.
|
||||
|
||||
|
||||
@section Features
|
||||
|
||||
@itemize
|
||||
@item Continuous decay of all balances.
|
||||
@item Capture and redistribution of decayed balances.
|
||||
@item Per-minute decay resolution.
|
||||
@item Minting and burning of vouchers.
|
||||
@item Grant and revoke access to mint and burn vouchers.
|
||||
@item Voucher expiration (modifiable anytime after publishing).
|
||||
@item Supply cap (modifiable anytime after publishing).
|
||||
@item Constant gas usage across exponential calculations.
|
||||
@end itemize
|
||||
|
||||
@section Nomenclature
|
||||
|
||||
@table @samp
|
||||
@item Demurrage
|
||||
A percentage of token supply that will continuously be removed.
|
||||
@item Demurrage Period
|
||||
A period of time denominated in minutes after which demurraged amounts are available for redistribution.
|
||||
@item Sink Account
|
||||
The intermediate beneficiary of the demurraged amount, which may or may not redistribute value.
|
||||
@item Base balance
|
||||
The inflated balance of each used which is stored for bookkeeping.
|
||||
@end table
|
||||
|
||||
|
||||
@ -1,57 +0,0 @@
|
||||
@node tools
|
||||
@chapter Tools
|
||||
|
||||
|
||||
When installed as a python package, @code{erc20-demurrage-token} installs the @code{erc20-demurrage-token-publish} executable script, which can be used to publish smart contract instances.
|
||||
|
||||
While the man page for the tool can be referred to for general information of the tool usage, two argument flags warrant special mention in the context of this documentation.
|
||||
|
||||
@table @code
|
||||
@item --demurrage-level
|
||||
The percentage of demurrage in terms of the redistribution period, defined as parts-per-million.
|
||||
@item --redistribution-period
|
||||
A numeric value denominated in @emph{minutes} to define the redistribution period of the voucher demurrage.
|
||||
@end table
|
||||
|
||||
For example, to define a 2% demurrage value for a redistribution period of 30 days (43200 minutes), the argument to the argument flags would be:
|
||||
|
||||
@verbatim
|
||||
erc20-demurrage-token-publish --demurrage-level 20000 --redistribution-period 43200 ...
|
||||
@end verbatim
|
||||
|
||||
|
||||
@section Calculating fixed-point values
|
||||
|
||||
The @code{erc20-demurrage-token} package installs the python package @code{dexif} as part of its dependencies.
|
||||
|
||||
This package in turn provides an epinymous command-line tool (@code{dexif}) which converts decimal values to a 128-bit fixed-point value expected by the contract constructor.
|
||||
|
||||
An example:
|
||||
|
||||
@example
|
||||
$ dexif 123.456
|
||||
7b74bc6a7ef9db23ff
|
||||
|
||||
$ dexif -x 7b74bc6a7ef9db23ff
|
||||
123.456
|
||||
@end example
|
||||
|
||||
|
||||
@section Contract interaction with chainlib-eth
|
||||
|
||||
All smart contract tests are implementing using @url{https://git.defalsify.org/chainlib-eth, chainlib-eth} from the chaintool suite.
|
||||
|
||||
The @code{eth-encode} tool from the @code{chainlib-eth} python package may be a convenient way to interact with contract features.
|
||||
|
||||
Some examples include:
|
||||
|
||||
@example
|
||||
# explicitly call changePeriod()
|
||||
$ eth-encode --mode tx --signature changePeriod -e <contract_address> -y <key_file> ...
|
||||
|
||||
# Set the sink address seal (The integer value of the SINK_STATE flag is 2 at the time of writing)
|
||||
$ eth-encode --mode tx --signature seal -e <contract_address> -y <key_file> ... u:2
|
||||
|
||||
# Query current sink address of contract
|
||||
$ eth-encode --mode call --signature sinkAddress -e <contract_address> ...
|
||||
@end example
|
||||
@ -1,32 +0,0 @@
|
||||
@node usecase
|
||||
@chapter Use Case
|
||||
|
||||
The use-case inspiring this implementation is in the context of issuance of a @emph{voucher} representing a credit obligation of an @emph{Issuer} or @emph{Association of Issuers}.
|
||||
|
||||
This voucher can be redeemed as payment for the products of the Issuer.
|
||||
|
||||
The Issuer is the entity legally obligated to redeem the voucher as payment.
|
||||
|
||||
Introducing demurrage on this vehicle discourages @emph{withholding} the voucher, for example for speculative advantage.
|
||||
|
||||
This also encourages increased @emph{velocity} of voucher use.
|
||||
|
||||
|
||||
@section Example
|
||||
|
||||
Given:
|
||||
|
||||
@itemize
|
||||
@item 10 voucher holders.
|
||||
@item A total supply of 1000 tokens.
|
||||
@item Demurrage of 2% per 30 days (43200 minutes).
|
||||
@item Redistribution period of 30 days (43200 minutes).
|
||||
@end itemize
|
||||
|
||||
If no trades are made, the resulting balances after one redistribution period of every user would be 98 Vouchers.
|
||||
|
||||
The Sink Address will have a balance of 20 vouchers after the same period.
|
||||
|
||||
Note that after the redistribution the total of all balances will equal the total minted amount.
|
||||
|
||||
Note that all accounts holding such vouchers are effected by demurrage (even the Sink Account, pending redistribution).
|
||||
@ -1,26 +1,3 @@
|
||||
- 0.5.5
|
||||
* Make allowance method public
|
||||
- 0.5.4
|
||||
* Add Transfer() event emission to sweep() in contract
|
||||
- 0.5.3
|
||||
* Add texinfo documentation
|
||||
* Add man page for publish tool
|
||||
- 0.5.2
|
||||
* Update ERC165 interface response for Expire
|
||||
* Add ExpiryChange event
|
||||
- 0.5.1
|
||||
* Update ERC165 interface responses
|
||||
- 0.5.0
|
||||
* Change license
|
||||
- 0.4.2
|
||||
* Correct burn interface implementation
|
||||
- 0.4.1
|
||||
* Eliminate solidity compiler warnings
|
||||
- 0.4.0
|
||||
* Rename taxLevel to decayLevel in contract
|
||||
* Add sweep contract method to fully empty one account into another
|
||||
- 0.3.6
|
||||
* Reinstate owner as minter by default
|
||||
- 0.3.0
|
||||
* Smart contracts use abdk math libraries, all exponential operations are static gas cost
|
||||
* Add expiry features, after which balances are frozen and no more transfers or demurrage will occur
|
||||
@ -28,12 +5,6 @@
|
||||
* Deployer script now takes demurrage amount as ppm instead of literal growth fraction
|
||||
* Retire old multi and cap contracts
|
||||
* Replace contract bitfields for redistributions with structs
|
||||
- 0.2.0
|
||||
* Add token burn function
|
||||
* Fix gas leak when calculating decay on period change
|
||||
* Remove all but SingleNocap contract in make install
|
||||
* Make approve explicitly set value
|
||||
* Add increaseAllowance and decreaseAllowance methods
|
||||
- 0.1.1
|
||||
* Settable demurrage steps for apply demurrage cli tool
|
||||
- 0.1.0
|
||||
|
||||
661
python/LICENSE
661
python/LICENSE
@ -1,661 +0,0 @@
|
||||
GNU AFFERO GENERAL PUBLIC LICENSE
|
||||
Version 3, 19 November 2007
|
||||
|
||||
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
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|
||||
|
||||
Preamble
|
||||
|
||||
The GNU Affero General Public License is a free, copyleft license for
|
||||
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|
||||
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|
||||
|
||||
The licenses for most software and other practical works are designed
|
||||
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|
||||
our General Public Licenses are intended to guarantee your freedom to
|
||||
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|
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|
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When we speak of free software, we are referring to freedom, not
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|
||||
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|
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|
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|
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|
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A secondary benefit of defending all users' freedom is that
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|
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||||
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||||
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|
||||
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|
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|
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|
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|
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|
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|
||||
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|
||||
|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
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||||
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|
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||||
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|
||||
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||||
|
||||
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|
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|
||||
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|
||||
|
||||
You may not propagate or modify a covered work except as expressly
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||||
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||||
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||||
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|
||||
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|
||||
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||||
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||||
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Termination of your rights under this section does not terminate the
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||||
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||||
receives a license from the original licensors, to run, modify and
|
||||
propagate that work, subject to this License. You are not responsible
|
||||
for enforcing compliance by third parties with this License.
|
||||
|
||||
An "entity transaction" is a transaction transferring control of an
|
||||
organization, or substantially all assets of one, or subdividing an
|
||||
organization, or merging organizations. If propagation of a covered
|
||||
work results from an entity transaction, each party to that
|
||||
transaction who receives a copy of the work also receives whatever
|
||||
licenses to the work the party's predecessor in interest had or could
|
||||
give under the previous paragraph, plus a right to possession of the
|
||||
Corresponding Source of the work from the predecessor in interest, if
|
||||
the predecessor has it or can get it with reasonable efforts.
|
||||
|
||||
You may not impose any further restrictions on the exercise of the
|
||||
rights granted or affirmed under this License. For example, you may
|
||||
not impose a license fee, royalty, or other charge for exercise of
|
||||
rights granted under this License, and you may not initiate litigation
|
||||
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||
any patent claim is infringed by making, using, selling, offering for
|
||||
sale, or importing the Program or any portion of it.
|
||||
|
||||
11. Patents.
|
||||
|
||||
A "contributor" is a copyright holder who authorizes use under this
|
||||
License of the Program or a work on which the Program is based. The
|
||||
work thus licensed is called the contributor's "contributor version".
|
||||
|
||||
A contributor's "essential patent claims" are all patent claims
|
||||
owned or controlled by the contributor, whether already acquired or
|
||||
hereafter acquired, that would be infringed by some manner, permitted
|
||||
by this License, of making, using, or selling its contributor version,
|
||||
but do not include claims that would be infringed only as a
|
||||
consequence of further modification of the contributor version. For
|
||||
purposes of this definition, "control" includes the right to grant
|
||||
patent sublicenses in a manner consistent with the requirements of
|
||||
this License.
|
||||
|
||||
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||
patent license under the contributor's essential patent claims, to
|
||||
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||
propagate the contents of its contributor version.
|
||||
|
||||
In the following three paragraphs, a "patent license" is any express
|
||||
agreement or commitment, however denominated, not to enforce a patent
|
||||
(such as an express permission to practice a patent or covenant not to
|
||||
sue for patent infringement). To "grant" such a patent license to a
|
||||
party means to make such an agreement or commitment not to enforce a
|
||||
patent against the party.
|
||||
|
||||
If you convey a covered work, knowingly relying on a patent license,
|
||||
and the Corresponding Source of the work is not available for anyone
|
||||
to copy, free of charge and under the terms of this License, through a
|
||||
publicly available network server or other readily accessible means,
|
||||
then you must either (1) cause the Corresponding Source to be so
|
||||
available, or (2) arrange to deprive yourself of the benefit of the
|
||||
patent license for this particular work, or (3) arrange, in a manner
|
||||
consistent with the requirements of this License, to extend the patent
|
||||
license to downstream recipients. "Knowingly relying" means you have
|
||||
actual knowledge that, but for the patent license, your conveying the
|
||||
covered work in a country, or your recipient's use of the covered work
|
||||
in a country, would infringe one or more identifiable patents in that
|
||||
country that you have reason to believe are valid.
|
||||
|
||||
If, pursuant to or in connection with a single transaction or
|
||||
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||
covered work, and grant a patent license to some of the parties
|
||||
receiving the covered work authorizing them to use, propagate, modify
|
||||
or convey a specific copy of the covered work, then the patent license
|
||||
you grant is automatically extended to all recipients of the covered
|
||||
work and works based on it.
|
||||
|
||||
A patent license is "discriminatory" if it does not include within
|
||||
the scope of its coverage, prohibits the exercise of, or is
|
||||
conditioned on the non-exercise of one or more of the rights that are
|
||||
specifically granted under this License. You may not convey a covered
|
||||
work if you are a party to an arrangement with a third party that is
|
||||
in the business of distributing software, under which you make payment
|
||||
to the third party based on the extent of your activity of conveying
|
||||
the work, and under which the third party grants, to any of the
|
||||
parties who would receive the covered work from you, a discriminatory
|
||||
patent license (a) in connection with copies of the covered work
|
||||
conveyed by you (or copies made from those copies), or (b) primarily
|
||||
for and in connection with specific products or compilations that
|
||||
contain the covered work, unless you entered into that arrangement,
|
||||
or that patent license was granted, prior to 28 March 2007.
|
||||
|
||||
Nothing in this License shall be construed as excluding or limiting
|
||||
any implied license or other defenses to infringement that may
|
||||
otherwise be available to you under applicable patent law.
|
||||
|
||||
12. No Surrender of Others' Freedom.
|
||||
|
||||
If conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot convey a
|
||||
covered work so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you may
|
||||
not convey it at all. For example, if you agree to terms that obligate you
|
||||
to collect a royalty for further conveying from those to whom you convey
|
||||
the Program, the only way you could satisfy both those terms and this
|
||||
License would be to refrain entirely from conveying the Program.
|
||||
|
||||
13. Remote Network Interaction; Use with the GNU General Public License.
|
||||
|
||||
Notwithstanding any other provision of this License, if you modify the
|
||||
Program, your modified version must prominently offer all users
|
||||
interacting with it remotely through a computer network (if your version
|
||||
supports such interaction) an opportunity to receive the Corresponding
|
||||
Source of your version by providing access to the Corresponding Source
|
||||
from a network server at no charge, through some standard or customary
|
||||
means of facilitating copying of software. This Corresponding Source
|
||||
shall include the Corresponding Source for any work covered by version 3
|
||||
of the GNU General Public License that is incorporated pursuant to the
|
||||
following paragraph.
|
||||
|
||||
Notwithstanding any other provision of this License, you have
|
||||
permission to link or combine any covered work with a work licensed
|
||||
under version 3 of the GNU General Public License into a single
|
||||
combined work, and to convey the resulting work. The terms of this
|
||||
License will continue to apply to the part which is the covered work,
|
||||
but the work with which it is combined will remain governed by version
|
||||
3 of the GNU General Public License.
|
||||
|
||||
14. Revised Versions of this License.
|
||||
|
||||
The Free Software Foundation may publish revised and/or new versions of
|
||||
the GNU Affero General Public License from time to time. Such new versions
|
||||
will be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the
|
||||
Program specifies that a certain numbered version of the GNU Affero General
|
||||
Public License "or any later version" applies to it, you have the
|
||||
option of following the terms and conditions either of that numbered
|
||||
version or of any later version published by the Free Software
|
||||
Foundation. If the Program does not specify a version number of the
|
||||
GNU Affero General Public License, you may choose any version ever published
|
||||
by the Free Software Foundation.
|
||||
|
||||
If the Program specifies that a proxy can decide which future
|
||||
versions of the GNU Affero General Public License can be used, that proxy's
|
||||
public statement of acceptance of a version permanently authorizes you
|
||||
to choose that version for the Program.
|
||||
|
||||
Later license versions may give you additional or different
|
||||
permissions. However, no additional obligations are imposed on any
|
||||
author or copyright holder as a result of your choosing to follow a
|
||||
later version.
|
||||
|
||||
15. Disclaimer of Warranty.
|
||||
|
||||
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||
|
||||
16. Limitation of Liability.
|
||||
|
||||
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
|
||||
17. Interpretation of Sections 15 and 16.
|
||||
|
||||
If the disclaimer of warranty and limitation of liability provided
|
||||
above cannot be given local legal effect according to their terms,
|
||||
reviewing courts shall apply local law that most closely approximates
|
||||
an absolute waiver of all civil liability in connection with the
|
||||
Program, unless a warranty or assumption of liability accompanies a
|
||||
copy of the Program in return for a fee.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
state the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Affero General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU Affero General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Affero General Public License
|
||||
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If your software can interact with users remotely through a computer
|
||||
network, you should also make sure that it provides a way for users to
|
||||
get its source. For example, if your program is a web application, its
|
||||
interface could display a "Source" link that leads users to an archive
|
||||
of the code. There are many ways you could offer source, and different
|
||||
solutions will be better for different programs; see section 13 for the
|
||||
specific requirements.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or school,
|
||||
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||
For more information on this, and how to apply and follow the GNU AGPL, see
|
||||
<https://www.gnu.org/licenses/>.
|
||||
@ -1 +1 @@
|
||||
include erc20_demurrage_token/data/* erc20_demurrage_token/data/config/*.ini *requirements.txt man/build/*.1
|
||||
include erc20_demurrage_token/data/* erc20_demurrage_token/data/config/*.ini *requirements.txt
|
||||
|
||||
@ -1,8 +0,0 @@
|
||||
all: pypi man
|
||||
|
||||
pypi:
|
||||
python setup.py sdist
|
||||
|
||||
man:
|
||||
mkdir -vp man/build
|
||||
chainlib-man.py -b 0x3fafff -d man/build -n erc20-demurrage-token-publish -v man
|
||||
@ -3,6 +3,3 @@ from .token import (
|
||||
DemurrageTokenSettings,
|
||||
DemurrageRedistribution,
|
||||
)
|
||||
from .token import create
|
||||
from .token import bytecode
|
||||
from .token import args
|
||||
|
||||
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
@ -1,176 +0,0 @@
|
||||
"""Deploy sarafu token
|
||||
|
||||
.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
|
||||
.. pgp:: 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
|
||||
|
||||
"""
|
||||
|
||||
# standard imports
|
||||
import sys
|
||||
import os
|
||||
import json
|
||||
import argparse
|
||||
import logging
|
||||
|
||||
# external imports
|
||||
import confini
|
||||
from funga.eth.signer import EIP155Signer
|
||||
from funga.eth.keystore.dict import DictKeystore
|
||||
from chainlib.chain import ChainSpec
|
||||
from chainlib.eth.nonce import (
|
||||
RPCNonceOracle,
|
||||
OverrideNonceOracle,
|
||||
)
|
||||
from chainlib.eth.gas import (
|
||||
RPCGasOracle,
|
||||
OverrideGasOracle,
|
||||
)
|
||||
from chainlib.eth.connection import EthHTTPConnection
|
||||
from chainlib.eth.tx import receipt
|
||||
from chainlib.eth.constant import ZERO_ADDRESS
|
||||
import chainlib.eth.cli
|
||||
from chainlib.eth.cli.arg import (
|
||||
Arg,
|
||||
ArgFlag,
|
||||
process_args,
|
||||
)
|
||||
from chainlib.eth.cli.config import (
|
||||
Config,
|
||||
process_config,
|
||||
)
|
||||
from chainlib.eth.cli.log import process_log
|
||||
from chainlib.eth.settings import process_settings
|
||||
from chainlib.eth.address import to_checksum_address
|
||||
from chainlib.settings import ChainSettings
|
||||
|
||||
from dexif import to_fixed
|
||||
|
||||
# local imports
|
||||
import erc20_demurrage_token
|
||||
from erc20_demurrage_token import (
|
||||
DemurrageToken,
|
||||
DemurrageTokenSettings,
|
||||
)
|
||||
|
||||
logg = logging.getLogger()
|
||||
|
||||
script_dir = os.path.dirname(__file__)
|
||||
data_dir = os.path.join(script_dir, '..', 'data')
|
||||
|
||||
config_dir = os.path.join(data_dir, 'config')
|
||||
|
||||
|
||||
def process_config_local(config, arg, args, flags):
|
||||
config.add(args.token_name, 'TOKEN_NAME')
|
||||
config.add(args.token_symbol, 'TOKEN_SYMBOL')
|
||||
config.add(args.token_decimals, 'TOKEN_DECIMALS')
|
||||
sink_address = to_checksum_address(args.sink_address)
|
||||
config.add(sink_address, 'TOKEN_SINK_ADDRESS')
|
||||
config.add(args.redistribution_period, 'TOKEN_REDISTRIBUTION_PERIOD')
|
||||
|
||||
v = (1 - (args.demurrage_level / 1000000)) ** (1 / config.get('TOKEN_REDISTRIBUTION_PERIOD'))
|
||||
if v >= 1.0:
|
||||
raise ValueError('demurrage level must be less than 100%')
|
||||
demurrage_level = to_fixed(v)
|
||||
logg.info('v {} demurrage level {}'.format(v, demurrage_level))
|
||||
config.add(demurrage_level, 'TOKEN_DEMURRAGE_LEVEL')
|
||||
return config
|
||||
|
||||
|
||||
arg_flags = ArgFlag()
|
||||
arg = Arg(arg_flags)
|
||||
flags = arg_flags.STD_WRITE | arg_flags.WALLET
|
||||
|
||||
argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
|
||||
argparser = process_args(argparser, arg, flags)
|
||||
argparser.add_argument('--name', dest='token_name', type=str, help='Token name')
|
||||
argparser.add_argument('--symbol', dest='token_symbol', required=True, type=str, help='Token symbol')
|
||||
argparser.add_argument('--decimals', dest='token_decimals', type=int, help='Token decimals')
|
||||
argparser.add_argument('--sink-address', dest='sink_address', type=str, help='demurrage level,ppm per minute')
|
||||
argparser.add_argument('--redistribution-period', type=int, help='redistribution period, minutes (0 = deactivate)') # default 10080 = week
|
||||
argparser.add_argument('--demurrage-level', dest='demurrage_level', type=int, help='demurrage level, ppm per period')
|
||||
args = argparser.parse_args()
|
||||
|
||||
logg = process_log(args, logg)
|
||||
|
||||
config = Config()
|
||||
config = process_config(config, arg, args, flags)
|
||||
config = process_config_local(config, arg, args, flags)
|
||||
logg.debug('config loaded:\n{}'.format(config))
|
||||
|
||||
settings = ChainSettings()
|
||||
settings = process_settings(settings, config)
|
||||
logg.debug('settings loaded:\n{}'.format(settings))
|
||||
|
||||
|
||||
#extra_args = {
|
||||
# 'redistribution_period': 'TOKEN_REDISTRIBUTION_PERIOD',
|
||||
# 'demurrage_level': 'TOKEN_DEMURRAGE_LEVEL',
|
||||
# 'supply_limit': 'TOKEN_SUPPLY_LIMIT',
|
||||
# 'token_name': 'TOKEN_NAME',
|
||||
# 'token_symbol': 'TOKEN_SYMBOL',
|
||||
# 'token_decimals': 'TOKEN_DECIMALS',
|
||||
# 'sink_address': 'TOKEN_SINK_ADDRESS',
|
||||
# 'multi': None,
|
||||
# }
|
||||
#config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, default_fee_limit=DemurrageToken.gas(), base_config_dir=config_dir)
|
||||
#
|
||||
#if not bool(config.get('TOKEN_NAME')):
|
||||
# logg.info('token name not set, using symbol {} as name'.format(config.get('TOKEN_SYMBOL')))
|
||||
# config.add(config.get('TOKEN_SYMBOL'), 'TOKEN_NAME', True)
|
||||
#
|
||||
#if config.get('TOKEN_SUPPLY_LIMIT') == None:
|
||||
# config.add(0, 'TOKEN_SUPPLY_LIMIT', True)
|
||||
#
|
||||
#if config.get('TOKEN_REDISTRIBUTION_PERIOD') == None:
|
||||
# config.add(10800, 'TOKEN_REDISTRIBUTION_PERIOD', True)
|
||||
#logg.debug('config loaded:\n{}'.format(config))
|
||||
#
|
||||
#wallet = chainlib.eth.cli.Wallet()
|
||||
#wallet.from_config(config)
|
||||
#
|
||||
#rpc = chainlib.eth.cli.Rpc(wallet=wallet)
|
||||
#conn = rpc.connect_by_config(config)
|
||||
#
|
||||
#chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
|
||||
|
||||
def main():
|
||||
conn = settings.get('CONN')
|
||||
c = DemurrageToken(
|
||||
settings.get('CHAIN_SPEC'),
|
||||
signer=settings.get('SIGNER'),
|
||||
gas_oracle=settings.get('FEE_ORACLE'),
|
||||
nonce_oracle=settings.get('NONCE_ORACLE'),
|
||||
)
|
||||
token_settings = DemurrageTokenSettings()
|
||||
token_settings.name = config.get('TOKEN_NAME')
|
||||
token_settings.symbol = config.get('TOKEN_SYMBOL')
|
||||
token_settings.decimals = int(config.get('TOKEN_DECIMALS'))
|
||||
token_settings.demurrage_level = int(config.get('TOKEN_DEMURRAGE_LEVEL'))
|
||||
token_settings.period_minutes = int(config.get('TOKEN_REDISTRIBUTION_PERIOD'))
|
||||
token_settings.sink_address = config.get('TOKEN_SINK_ADDRESS')
|
||||
|
||||
(tx_hash_hex, o) = c.constructor(
|
||||
settings.get('SENDER_ADDRESS'),
|
||||
token_settings,
|
||||
)
|
||||
if settings.get('RPC_SEND'):
|
||||
conn.do(o)
|
||||
if config.true('_WAIT'):
|
||||
r = conn.wait(tx_hash_hex)
|
||||
if r['status'] == 0:
|
||||
sys.stderr.write('EVM revert while deploying contract. Wish I had more to tell you')
|
||||
sys.exit(1)
|
||||
# TODO: pass through translator for keys (evm tester uses underscore instead of camelcase)
|
||||
address = r['contractAddress']
|
||||
|
||||
print(address)
|
||||
else:
|
||||
print(tx_hash_hex)
|
||||
|
||||
else:
|
||||
print(o)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
@ -1 +0,0 @@
|
||||
wor@gecon.733148:1676287007
|
||||
@ -68,11 +68,10 @@ def process_config_local(config, arg, args, flags):
|
||||
config.add(sink_address, 'TOKEN_SINK_ADDRESS')
|
||||
config.add(args.redistribution_period, 'TOKEN_REDISTRIBUTION_PERIOD')
|
||||
|
||||
v = (1 - (args.demurrage_level / 1000000)) ** (1 / config.get('TOKEN_REDISTRIBUTION_PERIOD'))
|
||||
v = args.demurrage_level / 1000000
|
||||
if v >= 1.0:
|
||||
raise ValueError('demurrage level must be less than 100%')
|
||||
demurrage_level = to_fixed(v)
|
||||
logg.info('v {} demurrage level {}'.format(v, demurrage_level))
|
||||
config.add(demurrage_level, 'TOKEN_DEMURRAGE_LEVEL')
|
||||
return config
|
||||
|
||||
|
||||
@ -78,34 +78,28 @@ class DemurrageToken(ERC20, SealedContract, ExpiryContract):
|
||||
__abi = {}
|
||||
__bytecode = {}
|
||||
|
||||
def constructor(self, sender_address, settings, tx_format=TxFormat.JSONRPC, version=None):
|
||||
code = self.cargs(settings.name, settings.symbol, settings.decimals, settings.demurrage_level, settings.period_minutes, settings.sink_address, version=version)
|
||||
def constructor(self, sender_address, settings, tx_format=TxFormat.JSONRPC):
|
||||
code = DemurrageToken.bytecode()
|
||||
enc = ABIContractEncoder()
|
||||
enc.string(settings.name)
|
||||
enc.string(settings.symbol)
|
||||
enc.uint256(settings.decimals)
|
||||
enc.uint256(settings.demurrage_level)
|
||||
enc.uint256(settings.period_minutes)
|
||||
enc.address(settings.sink_address)
|
||||
code += enc.get()
|
||||
tx = self.template(sender_address, None, use_nonce=True)
|
||||
tx = self.set_code(tx, code)
|
||||
return self.finalize(tx, tx_format)
|
||||
|
||||
|
||||
@staticmethod
|
||||
def cargs(name, symbol, decimals, demurrage_level, period_minutes, sink_address, version=None):
|
||||
code = DemurrageToken.bytecode()
|
||||
enc = ABIContractEncoder()
|
||||
enc.string(name)
|
||||
enc.string(symbol)
|
||||
enc.uint256(decimals)
|
||||
enc.uint256(demurrage_level)
|
||||
enc.uint256(period_minutes)
|
||||
enc.address(sink_address)
|
||||
code += enc.get()
|
||||
return code
|
||||
|
||||
|
||||
@staticmethod
|
||||
def gas(code=None):
|
||||
return 7000000
|
||||
return 4000000
|
||||
|
||||
|
||||
@staticmethod
|
||||
def abi():
|
||||
def abi(multi=True):
|
||||
name = 'DemurrageTokenSingleNocap'
|
||||
if DemurrageToken.__abi.get(name) == None:
|
||||
f = open(os.path.join(data_dir, name + '.json'), 'r')
|
||||
@ -115,7 +109,7 @@ class DemurrageToken(ERC20, SealedContract, ExpiryContract):
|
||||
|
||||
|
||||
@staticmethod
|
||||
def bytecode(version=None):
|
||||
def bytecode(multi=True):
|
||||
name = 'DemurrageTokenSingleNocap'
|
||||
if DemurrageToken.__bytecode.get(name) == None:
|
||||
f = open(os.path.join(data_dir, name + '.bin'), 'r')
|
||||
@ -443,19 +437,6 @@ class DemurrageToken(ERC20, SealedContract, ExpiryContract):
|
||||
return tx
|
||||
|
||||
|
||||
def sweep(self, contract_address, sender_address, recipient_address, tx_format=TxFormat.JSONRPC):
|
||||
enc = ABIContractEncoder()
|
||||
enc.method('sweep')
|
||||
enc.typ(ABIContractType.ADDRESS)
|
||||
enc.address(recipient_address)
|
||||
data = enc.get()
|
||||
tx = self.template(sender_address, contract_address, use_nonce=True)
|
||||
tx = self.set_code(tx, data)
|
||||
tx = self.finalize(tx, tx_format)
|
||||
return tx
|
||||
|
||||
|
||||
|
||||
def apply_demurrage(self, contract_address, sender_address, limit=0, tx_format=TxFormat.JSONRPC):
|
||||
if limit == 0:
|
||||
return self.transact_noarg('applyDemurrage', contract_address, sender_address)
|
||||
@ -487,8 +468,10 @@ class DemurrageToken(ERC20, SealedContract, ExpiryContract):
|
||||
return tx
|
||||
|
||||
|
||||
def decay_level(self, contract_address, sender_address=ZERO_ADDRESS):
|
||||
return self.call_noarg('decayLevel', contract_address, sender_address=sender_address)
|
||||
|
||||
|
||||
def tax_level(self, contract_address, sender_address=ZERO_ADDRESS):
|
||||
return self.call_noarg('taxLevel', contract_address, sender_address=sender_address)
|
||||
|
||||
|
||||
def resolution_factor(self, contract_address, sender_address=ZERO_ADDRESS):
|
||||
@ -669,7 +652,7 @@ class DemurrageToken(ERC20, SealedContract, ExpiryContract):
|
||||
|
||||
|
||||
@classmethod
|
||||
def parse_decay_level(self, v):
|
||||
def parse_tax_level(self, v):
|
||||
return abi_decode_single(ABIContractType.UINT256, v)
|
||||
|
||||
|
||||
@ -682,25 +665,3 @@ class DemurrageToken(ERC20, SealedContract, ExpiryContract):
|
||||
def parse_total_burned(self, v):
|
||||
return abi_decode_single(ABIContractType.UINT256, v)
|
||||
|
||||
|
||||
def bytecode(**kwargs):
|
||||
return DemurrageToken.bytecode(version=kwargs.get('version'))
|
||||
|
||||
|
||||
def create(**kwargs):
|
||||
return DemurrageToken.cargs(
|
||||
kwargs['name'],
|
||||
kwargs['symbol'],
|
||||
kwargs['decimals'],
|
||||
kwargs['demurragelevel'],
|
||||
kwargs['redistributionperiod'],
|
||||
kwargs['sinkaddress'],
|
||||
version=kwargs.get('version'))
|
||||
|
||||
|
||||
def args(v):
|
||||
if v == 'create':
|
||||
return (['name', 'symbol', 'decimals', 'demurragelevel', 'redistributionperiod', 'sinkaddress'], ['version'],)
|
||||
elif v == 'default' or v == 'bytecode':
|
||||
return ([], ['version'],)
|
||||
raise ValueError('unknown command: ' + v)
|
||||
|
||||
@ -61,10 +61,10 @@ class TestTokenDeploy:
|
||||
self.start_time = int(r['timestamp'])
|
||||
|
||||
|
||||
def publish(self, rpc, publisher_address, interface, supply_cap=0):
|
||||
def deploy(self, rpc, deployer_address, interface, supply_cap=0):
|
||||
tx_hash = None
|
||||
o = None
|
||||
(tx_hash, o) = interface.constructor(publisher_address, self.settings)
|
||||
(tx_hash, o) = interface.constructor(deployer_address, self.settings)
|
||||
|
||||
r = rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
@ -77,6 +77,12 @@ class TestTokenDeploy:
|
||||
r = rpc.do(o)
|
||||
self.start_time = r['timestamp']
|
||||
|
||||
(tx_hash, o) = interface.add_writer(self.address, deployer_address, deployer_address)
|
||||
r = rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = rpc.do(o)
|
||||
assert r['status'] == 1
|
||||
|
||||
return self.address
|
||||
|
||||
|
||||
@ -89,7 +95,7 @@ class TestDemurrage(EthTesterCase):
|
||||
period = getattr(self, 'period')
|
||||
except AttributeError as e:
|
||||
pass
|
||||
self.publisher = TestTokenDeploy(self.rpc, period=period, sink_address=self.accounts[9])
|
||||
self.deployer = TestTokenDeploy(self.rpc, period=period, sink_address=self.accounts[9])
|
||||
self.default_supply = 0
|
||||
self.default_supply_cap = 0
|
||||
self.start_block = None
|
||||
@ -97,13 +103,13 @@ class TestDemurrage(EthTesterCase):
|
||||
self.start_time = None
|
||||
|
||||
|
||||
def publish(self, interface):
|
||||
self.address = self.publisher.publish(self.rpc, self.accounts[0], interface, supply_cap=self.default_supply_cap)
|
||||
self.start_block = self.publisher.start_block
|
||||
self.start_time = self.publisher.start_time
|
||||
self.tax_level = self.publisher.tax_level
|
||||
self.period_seconds = self.publisher.period_seconds
|
||||
self.sink_address = self.publisher.sink_address
|
||||
def deploy(self, interface):
|
||||
self.address = self.deployer.deploy(self.rpc, self.accounts[0], interface, supply_cap=self.default_supply_cap)
|
||||
self.start_block = self.deployer.start_block
|
||||
self.start_time = self.deployer.start_time
|
||||
self.tax_level = self.deployer.tax_level
|
||||
self.period_seconds = self.deployer.period_seconds
|
||||
self.sink_address = self.deployer.sink_address
|
||||
|
||||
logg.debug('contract address {} start block {} start time {}'.format(self.address, self.start_block, self.start_time))
|
||||
|
||||
@ -119,13 +125,6 @@ class TestDemurrage(EthTesterCase):
|
||||
raise AssertionError('{} not within lower {} and higher {}'.format(v, lower_target, higher_target))
|
||||
|
||||
|
||||
def assert_within_greater(self, v, target, tolerance_ppm):
|
||||
greater_target = target + (target * (tolerance_ppm / 1000000))
|
||||
self.assertLessEqual(v, greater_target)
|
||||
self.assertGreaterEqual(v, target)
|
||||
logg.debug('asserted within greater {} >= {} >= {}'.format(greater_target, v, target))
|
||||
|
||||
|
||||
def assert_within_lower(self, v, target, tolerance_ppm):
|
||||
lower_target = target - (target * (tolerance_ppm / 1000000))
|
||||
self.assertGreaterEqual(v, lower_target)
|
||||
@ -151,7 +150,7 @@ class TestDemurrageDefault(TestDemurrage):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
self.publish(c)
|
||||
self.deploy(c)
|
||||
|
||||
self.default_supply = 10**12
|
||||
self.default_supply_cap = self.default_supply
|
||||
|
||||
@ -1,218 +0,0 @@
|
||||
.TH erc20-demurrage-token-publish 1
|
||||
|
||||
.SH NAME
|
||||
erc20-demurrage-token-publish \- Publishing tool for the ERC20 Demurrage Token smart contract.
|
||||
|
||||
|
||||
.SH SYNOPSIS
|
||||
.SY erc20-demurrage-token-publish
|
||||
.RI --name NAME --symbol SYMBOL --decimals DECIMALS --demurrage-level PPM --redistribution-period MINUTES --sink-address ADDRESS
|
||||
.YS
|
||||
|
||||
|
||||
.SH DESCRIPTION
|
||||
.P
|
||||
This tool generates the appropriate bytecode to store the ERC20 Demurrage Token smartcontract code on an EVM chain, along with the required construction parameters.
|
||||
|
||||
Arguments for EVM encoding and interaction with EVM RPC node is handled by the \fBchainlib-eth\fP python package.
|
||||
|
||||
Specific arguments for this tool are the \fB--demurrage-level\fP, \fB--redistribution-period\fP and \fB--sink-address\fP arguments.
|
||||
|
||||
|
||||
.SS OPTIONS
|
||||
|
||||
.TP
|
||||
\fB-0\fP
|
||||
Omit newline to output
|
||||
|
||||
.TP
|
||||
\fB-c \fI\fIconfig_dir\fP\fP, \fB--config \fI\fIconfig_dir\fP\fP
|
||||
Load configuration files from given directory. All files with an .ini extension will be loaded, of which all must contain valid ini file data.
|
||||
|
||||
.TP
|
||||
\fB--demurrage-level \fI\fIlevel
|
||||
\fP\fP
|
||||
Level of decay per minute. See SPECIFYING DEMURRAGE below.
|
||||
|
||||
.TP
|
||||
\fB--dumpconfig \fI\fIformat\fP\fP
|
||||
Output configuration settings rendered from environment and inputs. Valid arguments are \fIini\fP for ini file output, and \fIenv\fP for environment variable output. See \fBCONFIGURATION\fP.
|
||||
|
||||
.TP
|
||||
\fB-e\fP, \fB--executable-address\fP
|
||||
Address of an executable code point on the network.
|
||||
|
||||
.TP
|
||||
\fB--env-prefix\fP
|
||||
Environment prefix for variables to overwrite configuration. Example: If \fB--env-prefix\fP is set to \fBFOO\fP then configuration variable \fBBAR_BAZ\fP would be set by environment variable \fBFOO_BAZ_BAR\fP. Also see \fBENVIRONMENT\fP.
|
||||
|
||||
.TP
|
||||
\fB--fee-limit\fP
|
||||
Set the limit of execution units for the transaction. If used with \fB-s\fP this may incur actual network token cost. If \fB--fee-price\fP is not explicitly set, the price \fImay\fP be retrieved from the network, and multiplied with this value to define the cost.
|
||||
|
||||
.TP
|
||||
\fB--fee-price\fP
|
||||
Set fee unit price to offer for the transaction. If used with \fB-s\fP this may incur actual network token cost.
|
||||
|
||||
.TP
|
||||
\fB--height\fP
|
||||
Block height at which to query state for. Does not apply to transactions.
|
||||
|
||||
.TP
|
||||
\fB-i \fI\fIchain_spec\fP\fP, \fB--chain-spec \fI\fIchain_spec\fP\fP
|
||||
Chain specification string, in the format <engine>:<fork>:<chain_id>:<common_name>. Example: "evm:london:1:ethereum". Overrides the \fIRPC_CREDENTIALS\fP configuration setting.
|
||||
|
||||
.TP
|
||||
\fB-n \fI\fInamespace\fP\fP, \fB--namespace \fI\fInamespace\fP\fP
|
||||
Load given configuration namespace. Configuration will be loaded from the immediate configuration subdirectory with the same name.
|
||||
|
||||
.TP
|
||||
\fB--no-logs\fP
|
||||
Turn of logging completely. Negates \fB-v\fP and \fB-vv\fP
|
||||
|
||||
.TP
|
||||
\fB--nonce\fP
|
||||
Explicitly set nonce to use for transaction.
|
||||
|
||||
.TP
|
||||
\fB-p\fP, \fB--rpc-provider\fP
|
||||
Fully-qualified URL of RPC provider. Overrides the \fIRPC_PROVIDER\fP configuration setting.
|
||||
|
||||
.TP
|
||||
\fB--passphrase-file \fI\fIpath\fP\fP
|
||||
Path to file containing password to unlock key file
|
||||
|
||||
.TP
|
||||
\fB--raw\fP
|
||||
Produce output most optimized for machines.
|
||||
|
||||
.TP
|
||||
\fB--redistribution-period \fI\fIminutes
|
||||
\fP\fP
|
||||
Number of minuntes between each withdrawal of demurraged value is possible.
|
||||
|
||||
.TP
|
||||
\fB--rpc-auth\fP
|
||||
RPC endpoint authentication method, e.g. how to handle a HTTP WWW-Authenticate header. Overrides the \fIRPC_AUTH\fP configuration setting.
|
||||
|
||||
.TP
|
||||
\fB--rpc-credentials\fP
|
||||
RPC endpoint authentication data. Format depends on the authentication method defined in \fB--rpc-auth\fP. Overrides the \fIRPC_CREDENTIALS\fP configuration setting.
|
||||
|
||||
.TP
|
||||
\fB--rpc-dialect\fP
|
||||
RPC backend dialect. If specified it \fImay\fP help with encoding and decoding issues. Overrides the \fIRPC_DIALECT\fP configuration setting.
|
||||
|
||||
.TP
|
||||
\fB-s\fP
|
||||
Send to network. If set, network state may change. This means tokens may be spent and so on. Use with care. Only applies to transactions.
|
||||
|
||||
.TP
|
||||
\fB--seq\fP
|
||||
Use numeric sequencial jsonrpc query ids. Useful for buggy server implementations who expects such.
|
||||
|
||||
.TP
|
||||
\fB--sink-address \fI\fIaddress
|
||||
\fP\fP
|
||||
Initial address receiving the demurrage value withdrawal.
|
||||
|
||||
.TP
|
||||
\fB-u\fP, \fB--unsafe\fP
|
||||
Allow addresses that do not pass checksum.
|
||||
|
||||
.TP
|
||||
\fB-v\fP
|
||||
Verbose. Show logs for important state changes.
|
||||
|
||||
.TP
|
||||
\fB-vv\fP
|
||||
Very verbose. Show logs with debugging information.
|
||||
|
||||
.TP
|
||||
\fB-w\fP
|
||||
Wait for the last transaction to be confirmed on the network. Will generate an error if the EVM execution fails.
|
||||
|
||||
.TP
|
||||
\fB-ww\fP
|
||||
Wait for \fIall\fP transactions sequentially to be confirmed on the network. Will generate an error if EVM execution fails for any of the transactions.
|
||||
|
||||
.TP
|
||||
\fB-y \fI\fIpath\fP\fP, \fB--key-path \fI\fIpath\fP\fP
|
||||
Path to signing key. Overrides the \fIWALLET_KEY_FILE\fP configuration setting.
|
||||
|
||||
.SH CONFIGURATION
|
||||
|
||||
All configuration settings may be overriden both by environment variables, or by overriding settings with the contents of ini-files in the directory defined by the \fB-c\fP option.
|
||||
|
||||
The active configuration, with values assigned from environment and arguments, can be output using the \fB--dumpconfig\fP \fIformat\fP option. Note that entries having keys prefixed with underscore (e.g. _SEQ) are not actual configuration settings, and thus cannot be overridden with environment variables.
|
||||
|
||||
To refer to a configuration setting by environment variables, the \fIsection\fP and \fIkey\fP are concatenated together with an underscore, and transformed to upper-case. For example, the configuration variable \fIFOO_BAZ_BAR\fP refers to an ini-file entry as follows:
|
||||
|
||||
.EX
|
||||
[foo]
|
||||
bar_baz = xyzzy
|
||||
.EE
|
||||
|
||||
In the \fBENVIRONMENT\fP section below, the relevant configuration settings for this tool is listed along with a short description of its meaning.
|
||||
|
||||
Some configuration settings may also be overriden by command line options. Also note that the use of the \fB-n\fP and \fB--env-prefix\fP options affect how environment and configuration is read. The effects of options on how configuration settings are affective is described in the respective \fBOPTIONS\fP section.
|
||||
|
||||
.SH SPECIFYING DEMURRAGE
|
||||
|
||||
Demurrage is specified as a parts-per-million value in terms of the chosen \fI--redistribution-period\fP.
|
||||
|
||||
For example, a value of \fB20000\fP with a \fI--redistribution-period\fP of \fB43200\fP corresponds to a \fB2%\fP demurrage per \fB30\fP days.
|
||||
.SH ENVIRONMENT
|
||||
|
||||
|
||||
.TP
|
||||
\fICHAIN_SPEC\fP
|
||||
String specifying the type of chain connected to, in the format \fI<engine>:<fork>:<network_id>:<common_name>\fP. For EVM nodes the \fIengine\fP value will always be \fIevm\fP.
|
||||
|
||||
.TP
|
||||
\fIRPC_AUTH\fP
|
||||
Authentication method to use for the \fIRPC_PROVIDER\fP. Currently only \fIbasic\fP is supported.
|
||||
|
||||
.TP
|
||||
\fIRPC_CREDENTIALS\fP
|
||||
Authentication credentials to use for \fIRPC_AUTH\fP. For \fIbasic\fP authentication the value must be given as \fI<user>:<pass>\fP.
|
||||
|
||||
.TP
|
||||
\fIRPC_DIALECT\fP
|
||||
Enables translations of EVM node specific formatting and response codes.
|
||||
|
||||
.TP
|
||||
\fIRPC_PROVIDER\fP
|
||||
Fully-qualified URL to the RPC endpoint of the blockchain node.
|
||||
|
||||
.TP
|
||||
\fIWALLET_KEY_FILE\fP
|
||||
The wallet key file containing private key to use for transaction signing. Overridden by \fB-y\fP.
|
||||
|
||||
.TP
|
||||
\fIWALLET_PASSPHRASE\fP
|
||||
Passphrase to unlock wallet. \fBWARNING:\fP it is \fBunsafe\fP to pass the passphrase as an environment variable. If the key unlocks something of value, the passphrase should rather be in a configuration file, preferably as an encrypted entry. Alternatively, a passphrase can be read from file using the \fB--passphrase-file\fP option. Files containing passphrases should only be accessible by the owner.
|
||||
|
||||
.SH LICENSE
|
||||
|
||||
This documentation and its source is licensed under the Creative Commons Attribution-Sharealike 4.0 International license.
|
||||
|
||||
The source code of the tool this documentation describes is licensed under the GNU General Public License 3.0.
|
||||
|
||||
.SH COPYRIGHT
|
||||
|
||||
Louis Holbrook <dev@holbrook.no> (https://holbrook.no)
|
||||
PGP: 59A844A484AC11253D3A3E9DCDCBD24DD1D0E001
|
||||
|
||||
|
||||
|
||||
.SH SOURCE CODE
|
||||
|
||||
https://git.defalsify.org
|
||||
|
||||
|
||||
.SH SEE ALSO
|
||||
|
||||
.BP
|
||||
confini-dump(1), eth-keyfile(1)
|
||||
|
||||
@ -1,5 +0,0 @@
|
||||
.SH SPECIFYING DEMURRAGE
|
||||
|
||||
Demurrage is specified as a parts-per-million value in terms of the chosen \fI--redistribution-period\fP.
|
||||
|
||||
For example, a value of \fB20000\fP with a \fI--redistribution-period\fP of \fB43200\fP corresponds to a \fB2%\fP demurrage per \fB30\fP days.
|
||||
@ -1,22 +0,0 @@
|
||||
.TH erc20-demurrage-token-publish 1
|
||||
|
||||
.SH NAME
|
||||
erc20-demurrage-token-publish \- Publishing tool for the ERC20 Demurrage Token smart contract.
|
||||
|
||||
|
||||
.SH SYNOPSIS
|
||||
.SY erc20-demurrage-token-publish
|
||||
.RI --name NAME --symbol SYMBOL --decimals DECIMALS --demurrage-level PPM --redistribution-period MINUTES --sink-address ADDRESS
|
||||
.YS
|
||||
|
||||
|
||||
.SH DESCRIPTION
|
||||
.P
|
||||
This tool generates the appropriate bytecode to store the ERC20 Demurrage Token smartcontract code on an EVM chain, along with the required construction parameters.
|
||||
|
||||
Arguments for EVM encoding and interaction with EVM RPC node is handled by the \fBchainlib-eth\fP python package.
|
||||
|
||||
Specific arguments for this tool are the \fB--demurrage-level\fP, \fB--redistribution-period\fP and \fB--sink-address\fP arguments.
|
||||
|
||||
|
||||
.SS OPTIONS
|
||||
@ -1,3 +0,0 @@
|
||||
demurragelevel Level of decay per minute. See SPECIFYING DEMURRAGE below. --demurrage-level level
|
||||
redistributionperiod Number of minuntes between each withdrawal of demurraged value is possible. --redistribution-period minutes
|
||||
sinkaddress Initial address receiving the demurrage value withdrawal. --sink-address address
|
||||
@ -1,5 +1,4 @@
|
||||
chainlib-eth~=0.4.11
|
||||
chainlib~=0.4.12
|
||||
eth-erc20~=0.7.0
|
||||
eth-erc20~=0.5.0
|
||||
funga-eth~=0.6.0
|
||||
dexif~=0.0.2
|
||||
dexif~=0.0.1
|
||||
|
||||
@ -1,10 +1,10 @@
|
||||
[metadata]
|
||||
name = erc20-demurrage-token
|
||||
version = 0.5.6
|
||||
version = 0.3.3
|
||||
description = ERC20 token with redistributed continual demurrage
|
||||
author = Louis Holbrook
|
||||
author_email = dev@holbrook.no
|
||||
url = https://holbrook.no/src/erc20-demurrage-token/log.html
|
||||
url = https://gitlab.com/ccicnet/erc20-demurrage-token
|
||||
keywords =
|
||||
ethereum
|
||||
blockchain
|
||||
@ -13,20 +13,19 @@ keywords =
|
||||
classifiers =
|
||||
Programming Language :: Python :: 3
|
||||
Operating System :: OS Independent
|
||||
Development Status :: 4 - Beta
|
||||
Environment :: Console
|
||||
Development Status :: 3 - Alpha
|
||||
Environment :: No Input/Output (Daemon)
|
||||
Intended Audience :: Developers
|
||||
License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)
|
||||
License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)
|
||||
Topic :: Internet
|
||||
Topic :: Software Development :: Libraries
|
||||
#Topic :: Blockchain :: EVM
|
||||
license = AGPLv3+
|
||||
license = GPL3
|
||||
licence_files =
|
||||
LICENSE
|
||||
|
||||
[options]
|
||||
include_package_data = True
|
||||
python_requires = >= 3.8
|
||||
python_requires = >= 3.7
|
||||
packages =
|
||||
erc20_demurrage_token
|
||||
erc20_demurrage_token.runnable
|
||||
|
||||
@ -1,5 +1,4 @@
|
||||
from setuptools import setup
|
||||
import os
|
||||
|
||||
requirements = []
|
||||
f = open('requirements.txt', 'r')
|
||||
@ -20,7 +19,6 @@ while True:
|
||||
f.close()
|
||||
|
||||
|
||||
man_dir = 'man/build'
|
||||
setup(
|
||||
package_data={
|
||||
'': [
|
||||
@ -30,8 +28,4 @@ setup(
|
||||
include_package_data=True,
|
||||
install_requires=requirements,
|
||||
tests_require=test_requirements,
|
||||
data_files=[("man/man1", [
|
||||
os.path.join(man_dir, 'erc20-demurrage-token-publish.1'),
|
||||
]
|
||||
)],
|
||||
)
|
||||
|
||||
@ -122,26 +122,5 @@ class TestAmounts(TestDemurrageDefault):
|
||||
self.assert_within_lower(balance, case[1], 10000)
|
||||
|
||||
|
||||
def test_sweep(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[0], 2000)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
(tx_hash, o) = c.sweep(self.address, self.accounts[0], self.accounts[1])
|
||||
self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
o = c.balance_of(self.address, self.accounts[0], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(c.parse_balance(r), 0)
|
||||
|
||||
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
self.assert_within(c.parse_balance(r), 2000, 1)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
|
||||
@ -308,30 +308,6 @@ class TestBasic(TestDemurrageDefault):
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
|
||||
def test_approve_max(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.approve(self.address, self.accounts[0], self.accounts[1], int.from_bytes(b'\xff' * 32, byteorder='big'))
|
||||
self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
(tx_hash, o) = c.approve(self.address, self.accounts[0], self.accounts[1], 0)
|
||||
self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
self.backend.time_travel(self.start_time + (60 * 60 * 24 * 365 * 10))
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.approve(self.address, self.accounts[0], self.accounts[1], int.from_bytes(b'\xff' * 32, byteorder='big'))
|
||||
self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
|
||||
def test_transfer_from(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
@ -1,314 +0,0 @@
|
||||
# standard imports
|
||||
import os
|
||||
import unittest
|
||||
import json
|
||||
import logging
|
||||
import datetime
|
||||
|
||||
# external imports
|
||||
from chainlib.eth.constant import ZERO_ADDRESS
|
||||
from chainlib.eth.nonce import RPCNonceOracle
|
||||
from chainlib.eth.tx import receipt
|
||||
from chainlib.eth.block import (
|
||||
block_latest,
|
||||
block_by_number,
|
||||
)
|
||||
|
||||
# local imports
|
||||
from erc20_demurrage_token import DemurrageToken
|
||||
|
||||
# test imports
|
||||
from erc20_demurrage_token.unittest.base import TestDemurrageDefault
|
||||
|
||||
logging.basicConfig(level=logging.INFO)
|
||||
logg = logging.getLogger()
|
||||
|
||||
testdir = os.path.dirname(__file__)
|
||||
|
||||
#TAX_LEVEL = 2
|
||||
|
||||
class TestBurn(TestDemurrageDefault):
|
||||
|
||||
def setUp(self):
|
||||
super(TestBurn, self).setUp()
|
||||
|
||||
#
|
||||
# def publish(self, tax_level=None):
|
||||
# nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
# c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
#
|
||||
# if tax_level != None:
|
||||
# self.publisher.settings.demurrage_level = tax_level * (10 ** 32)
|
||||
# self.publisher.settings.sink_address = self.accounts[9]
|
||||
# self.publisher.sink_address = self.accounts[9]
|
||||
# super(TestBurn, self).publish(c)
|
||||
|
||||
|
||||
# Burn tokens and immediately check balances and supply
|
||||
def test_burn_basic(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], 1000000)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.burn(self.address, self.accounts[1], 600000)
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 0)
|
||||
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.add_minter(self.address, self.accounts[0], self.accounts[1])
|
||||
r = self.rpc.do(o)
|
||||
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.burn(self.address, self.accounts[1], 600000)
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
new_supply = c.parse_total_supply(r)
|
||||
self.assertEqual(new_supply, 400000)
|
||||
|
||||
o = c.total_burned(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
burned = c.parse_total_burned(r)
|
||||
self.assertEqual(burned, 600000)
|
||||
|
||||
|
||||
# burn tokens and check sink balance and supply after first redistribution period
|
||||
def test_burned_redistribution(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[0], 1000000000)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
(tx_hash, o) = c.burn(self.address, self.accounts[0], 500000000)
|
||||
self.rpc.do(o)
|
||||
|
||||
(tx_hash, o) = c.transfer(self.address, self.accounts[0], self.sink_address, 500000000)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
self.backend.time_travel(self.start_time + self.period_seconds)
|
||||
|
||||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bal = c.parse_balance(r)
|
||||
self.assert_within(bal, 490000000, 1) # 2% == 10000000
|
||||
|
||||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
new_supply = c.parse_total_supply(r)
|
||||
self.assertEqual(new_supply, 500000000)
|
||||
|
||||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bal = c.parse_balance(r)
|
||||
self.assert_within(bal, 500000000, 1)
|
||||
|
||||
self.backend.time_travel(self.start_time + (self.period_seconds * 2))
|
||||
|
||||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
new_supply = c.parse_total_supply(r)
|
||||
self.assertEqual(new_supply, 500000000)
|
||||
|
||||
# if we don't burn anything more it should be the same
|
||||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bal = c.parse_balance(r)
|
||||
self.assert_within_lower(bal, 500000000, 1)
|
||||
|
||||
|
||||
# burn tokens and check sink and taxed balance and supply after first redistribution period
|
||||
def test_burned_other_redistribution(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[0], 1000000000)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
(tx_hash, o) = c.burn(self.address, self.accounts[0], 500000000)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
(tx_hash, o) = c.transfer(self.address, self.accounts[0], self.accounts[1], 500000000)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
self.backend.time_travel(self.start_time + self.period_seconds)
|
||||
|
||||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bal = c.parse_balance(r)
|
||||
#self.assertEqual(bal, 416873881) # 9 periods demurrage
|
||||
self.assert_within(bal, 490000000, 1)
|
||||
|
||||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
new_supply = c.parse_total_supply(r)
|
||||
self.assertEqual(new_supply, 500000000)
|
||||
|
||||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bal = c.parse_balance(r)
|
||||
self.assert_within(bal, 490000000, 1)
|
||||
|
||||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
sink_bal = c.parse_balance(r)
|
||||
self.assert_within_lower(sink_bal, 10000000, 1) # TODO is this ok variance, 1.0 is ppm?
|
||||
|
||||
self.backend.time_travel(self.start_time + (self.period_seconds * 2))
|
||||
|
||||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
new_supply = c.parse_total_supply(r)
|
||||
self.assertEqual(new_supply, 500000000)
|
||||
|
||||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
next_bal = c.parse_balance(r)
|
||||
self.assert_within(next_bal, 480200000, 0.01)
|
||||
|
||||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
prev_sink_bal = sink_bal
|
||||
bal = prev_sink_bal + (bal - next_bal)
|
||||
sink_bal = c.parse_balance(r)
|
||||
self.assert_within_lower(sink_bal, bal, 0.09) # TODO is this ok variance, 1.0 is ppm?
|
||||
|
||||
|
||||
# verify expected results of balance and supply after multiple redistribution periods
|
||||
def test_burn_accumulate(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
(tx_hash, o) = c.add_minter(self.address, self.accounts[0], self.sink_address)
|
||||
self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.sink_address, self.default_supply)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
balance_share = int(self.default_supply / 2)
|
||||
nonce_oracle = RPCNonceOracle(self.sink_address, self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.transfer(self.address, self.sink_address, self.accounts[1], balance_share)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
new_supply = None
|
||||
burn_rate = 1000
|
||||
sink_bal = None
|
||||
bob_bal = None
|
||||
bob_refund = None
|
||||
|
||||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bob_bal = c.parse_balance(r)
|
||||
prev_bob_bal = bob_bal
|
||||
|
||||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
logg.info('sink has balance {}'.format(c.parse_balance(r)))
|
||||
|
||||
iterations = 100
|
||||
|
||||
for i in range(1, iterations + 1):
|
||||
nonce_oracle = RPCNonceOracle(self.sink_address, self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
if bob_refund != None:
|
||||
(tx_hash, o) = c.transfer(self.address, self.sink_address, self.accounts[1], bob_refund)
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
(tx_hash, o) = c.burn(self.address, self.sink_address, burn_rate)
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
new_supply = c.parse_total_supply(r)
|
||||
|
||||
self.backend.time_travel(self.start_time + (self.period_seconds * i))
|
||||
|
||||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||||
self.rpc.do(o)
|
||||
|
||||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bob_bal = c.parse_balance(r)
|
||||
bob_refund = prev_bob_bal - bob_bal
|
||||
|
||||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
burner_bal = c.parse_balance(r)
|
||||
|
||||
sum_supply = bob_bal + burner_bal
|
||||
|
||||
o = c.total_burned(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
total_burned = c.parse_balance(r)
|
||||
|
||||
o = c.to_base_amount(self.address, total_burned, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
total_burned_base = c.parse_balance(r)
|
||||
|
||||
expected_supply = self.default_supply - (burn_rate * i)
|
||||
logg.info('checking burn round {} balance burner {} bob {} supply {} expected {} summed {} burned {} base {}'.format(i, burner_bal, bob_bal, new_supply, expected_supply, sum_supply, total_burned, total_burned_base))
|
||||
self.assertEqual(new_supply, expected_supply)
|
||||
|
||||
sum_supply = burner_bal + bob_bal
|
||||
logg.debug('balances sink {} bob {} total {} supply real {} original {}'.format(sink_bal, bob_bal, sum_supply, new_supply, self.default_supply))
|
||||
|
||||
self.assert_within_lower(sum_supply, new_supply, 1)
|
||||
self.assert_within_lower(burner_bal, balance_share - total_burned + bob_refund, 1)
|
||||
|
||||
bob_delta = self.default_supply * ((2 / 1000000) / 1000)
|
||||
self.assert_within_greater(bob_bal, balance_share - bob_delta - bob_refund, 1)
|
||||
|
||||
self.assertEqual(total_burned, iterations * burn_rate)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@ -1,114 +0,0 @@
|
||||
# standard imports
|
||||
import datetime
|
||||
import unittest
|
||||
import logging
|
||||
import os
|
||||
|
||||
# external imports
|
||||
from chainlib.eth.nonce import RPCNonceOracle
|
||||
from chainlib.eth.tx import receipt
|
||||
|
||||
# local imports
|
||||
from erc20_demurrage_token import DemurrageToken
|
||||
from erc20_demurrage_token.demurrage import DemurrageCalculator
|
||||
|
||||
# test imports
|
||||
from erc20_demurrage_token.unittest import TestDemurrageDefault
|
||||
|
||||
logging.basicConfig(level=logging.INFO)
|
||||
logg = logging.getLogger()
|
||||
|
||||
|
||||
class TestDemurragePeriods(TestDemurrageDefault):
|
||||
|
||||
# verify that tax level calculation is in ppm as expected
|
||||
def test_ppm(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], self.default_supply)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
self.backend.time_travel(self.start_time + 60)
|
||||
|
||||
(tx_hash, o) = c.apply_demurrage(self.address, self.accounts[0])
|
||||
self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bob_bal = c.parse_balance(r)
|
||||
|
||||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
sink_bal = c.parse_balance(r)
|
||||
|
||||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
new_supply = c.parse_total_supply(r)
|
||||
|
||||
balance_delta = self.default_supply * ((2 / 1000000) / 1000)
|
||||
self.assertEqual(bob_bal, self.default_supply - balance_delta)
|
||||
|
||||
|
||||
|
||||
# verify balances and supply after multiple demurrage periods
|
||||
def test_over_time(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], self.default_supply)
|
||||
r = self.rpc.do(o)
|
||||
|
||||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bob_bal = c.parse_balance(r)
|
||||
prev_bob_bal = bob_bal
|
||||
|
||||
nonce_oracle = RPCNonceOracle(self.sink_address, self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
|
||||
iterations = 100
|
||||
|
||||
for i in range(1, iterations + 1):
|
||||
self.backend.time_travel(self.start_time + (self.period_seconds * i))
|
||||
|
||||
(tx_hash, o) = c.transfer(self.address, self.sink_address, self.accounts[1], prev_bob_bal - bob_bal)
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
(tx_hash, o) = c.apply_demurrage(self.address, self.sink_address)
|
||||
self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
bob_bal = c.parse_balance(r)
|
||||
|
||||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
sink_bal = c.parse_balance(r)
|
||||
|
||||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||||
r = self.rpc.do(o)
|
||||
new_supply = c.parse_total_supply(r)
|
||||
|
||||
logg.info('round {} supply {} balance sink {} bob {}'.format(i, new_supply, sink_bal, bob_bal))
|
||||
|
||||
sum_supply = sink_bal + bob_bal
|
||||
|
||||
bob_delta = self.default_supply * ((2 / 1000000) / 100)
|
||||
|
||||
self.assert_within_lower(sum_supply, new_supply, 0.00001)
|
||||
self.assert_within_greater(bob_bal, self.default_supply - bob_delta, 0.001)
|
||||
self.assert_within_lower(sink_bal, bob_delta, 1000)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@ -1,77 +0,0 @@
|
||||
# standard imports
|
||||
import os
|
||||
import unittest
|
||||
import json
|
||||
import logging
|
||||
|
||||
# external imports
|
||||
from chainlib.eth.constant import ZERO_ADDRESS
|
||||
from chainlib.eth.nonce import RPCNonceOracle
|
||||
from chainlib.eth.tx import receipt
|
||||
from chainlib.eth.block import block_latest
|
||||
from chainlib.eth.block import block_by_number
|
||||
|
||||
# local imports
|
||||
from erc20_demurrage_token import DemurrageToken
|
||||
|
||||
# test imports
|
||||
from erc20_demurrage_token.unittest import TestDemurrageDefault
|
||||
|
||||
logging.basicConfig(level=logging.DEBUG)
|
||||
logg = logging.getLogger()
|
||||
|
||||
testdir = os.path.dirname(__file__)
|
||||
|
||||
class TestAmounts(TestDemurrageDefault):
|
||||
|
||||
def test_mint(self):
|
||||
o = block_latest()
|
||||
r = self.rpc.do(o)
|
||||
o = block_by_number(r)
|
||||
r = self.rpc.do(o)
|
||||
tb = r['timestamp']
|
||||
self.backend.time_travel(self.start_time + 800)
|
||||
o = block_latest()
|
||||
r = self.rpc.do(o)
|
||||
o = block_by_number(r)
|
||||
r = self.rpc.do(o)
|
||||
ta = r['timestamp']
|
||||
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], 1000)
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
|
||||
def test_writer(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[1], self.accounts[1], 1000)
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 0)
|
||||
|
||||
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.add_writer(self.address, self.accounts[0], self.accounts[1])
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
|
||||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||||
(tx_hash, o) = c.mint_to(self.address, self.accounts[1], self.accounts[1], 1000)
|
||||
r = self.rpc.do(o)
|
||||
o = receipt(tx_hash)
|
||||
r = self.rpc.do(o)
|
||||
self.assertEqual(r['status'], 1)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@ -34,7 +34,6 @@ testdir = os.path.dirname(__file__)
|
||||
class TestRedistribution(TestDemurrageDefault):
|
||||
|
||||
|
||||
|
||||
# TODO: move to "pure" test file when getdistribution is implemented in all contracts
|
||||
def test_distribution_direct(self):
|
||||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||||
|
||||
@ -1,19 +1,17 @@
|
||||
pragma solidity >= 0.8.0;
|
||||
|
||||
|
||||
import "aux/ABDKMath64x64.sol";
|
||||
|
||||
// SPDX-License-Identifier: AGPL-3.0-or-later
|
||||
|
||||
// SPDX-License-Identifier: GPL-3.0-or-later
|
||||
contract DemurrageTokenSingleNocap {
|
||||
|
||||
uint256 constant VALUE_LIMIT = 1 << 63;
|
||||
|
||||
struct redistributionItem {
|
||||
uint32 period;
|
||||
uint72 value;
|
||||
uint64 demurrage;
|
||||
}
|
||||
redistributionItem[] public redistributions;
|
||||
redistributionItem[] public redistributions; // uint51(unused) | uint64(demurrageModifier) | uint36(participants) | uint72(value) | uint32(period)
|
||||
|
||||
// Account balances
|
||||
mapping (address => uint256) account;
|
||||
@ -25,7 +23,7 @@ contract DemurrageTokenSingleNocap {
|
||||
// Cached demurrage timestamp; the timestamp for which demurrageAmount was last calculated
|
||||
uint256 public demurrageTimestamp;
|
||||
|
||||
// Implements EIP173
|
||||
// Implements EIP172
|
||||
address public owner;
|
||||
|
||||
address newOwner;
|
||||
@ -39,6 +37,8 @@ contract DemurrageTokenSingleNocap {
|
||||
// Implements ERC20
|
||||
uint256 public immutable decimals;
|
||||
|
||||
// Implements ERC20
|
||||
//uint256 public totalSupply;
|
||||
uint256 supply;
|
||||
|
||||
// Last executed period
|
||||
@ -48,7 +48,7 @@ contract DemurrageTokenSingleNocap {
|
||||
uint256 public totalSink;
|
||||
|
||||
// Value of burnt tokens (burnt tokens do not decay)
|
||||
uint256 burned;
|
||||
uint256 public burned;
|
||||
|
||||
// 128 bit resolution of the demurrage divisor
|
||||
// (this constant x 1000000 is contained within 128 bits)
|
||||
@ -67,15 +67,15 @@ contract DemurrageTokenSingleNocap {
|
||||
uint256 public immutable periodDuration;
|
||||
|
||||
// Demurrage in ppm per minute
|
||||
//uint256 public immutable decayLevel;
|
||||
//uint256 public immutable taxLevel;
|
||||
// 64x64
|
||||
int128 public immutable decayLevel;
|
||||
int128 public immutable taxLevel;
|
||||
|
||||
// Addresses allowed to mint new tokens
|
||||
mapping (address => bool) minter;
|
||||
|
||||
// Storage for ERC20 approve/transferFrom methods
|
||||
mapping (address => mapping (address => uint256 ) ) public allowance; // holder -> spender -> amount (amount is subject to demurrage)
|
||||
mapping (address => mapping (address => uint256 ) ) allowance; // holder -> spender -> amount (amount is subject to demurrage)
|
||||
|
||||
// Address to send unallocated redistribution tokens
|
||||
address public sinkAddress;
|
||||
@ -93,7 +93,7 @@ contract DemurrageTokenSingleNocap {
|
||||
// Implements ERC20
|
||||
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
|
||||
|
||||
// Implements Minter
|
||||
// New tokens minted
|
||||
event Mint(address indexed _minter, address indexed _beneficiary, uint256 _value);
|
||||
|
||||
// New demurrage cache milestone calculated
|
||||
@ -109,38 +109,32 @@ contract DemurrageTokenSingleNocap {
|
||||
//event Debug(bytes32 _foo);
|
||||
event Debug(int128 indexed _foo, uint256 indexed _bar);
|
||||
|
||||
// Implements Burn
|
||||
// Emitted when tokens are burned
|
||||
event Burn(address indexed _burner, uint256 _value);
|
||||
|
||||
// EIP173
|
||||
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); // EIP173
|
||||
|
||||
// Implements Expire
|
||||
event Expired(uint256 _timestamp);
|
||||
event SealStateChange(uint256 _sealState);
|
||||
|
||||
// Implements Expire
|
||||
event ExpiryChange(uint256 indexed _oldTimestamp, uint256 _newTimestamp);
|
||||
event Expired(uint256 _timestamp);
|
||||
|
||||
event Cap(uint256 indexed _oldCap, uint256 _newCap);
|
||||
|
||||
// Implements Seal
|
||||
// property sealing
|
||||
uint256 public sealState;
|
||||
uint8 constant WRITER_STATE = 1;
|
||||
uint8 constant MINTER_STATE = 1;
|
||||
uint8 constant SINK_STATE = 2;
|
||||
uint8 constant EXPIRY_STATE = 4;
|
||||
uint8 constant CAP_STATE = 8;
|
||||
// Implements Seal
|
||||
uint256 constant public maxSealState = 15;
|
||||
|
||||
// Implements Seal
|
||||
event SealStateChange(bool indexed _final, uint256 _sealState);
|
||||
|
||||
|
||||
constructor(string memory _name, string memory _symbol, uint8 _decimals, int128 _decayLevel, uint256 _periodMinutes, address _defaultSinkAddress) {
|
||||
require(_decayLevel < (1 << 64));
|
||||
constructor(string memory _name, string memory _symbol, uint8 _decimals, int128 _taxLevel, uint256 _periodMinutes, address _defaultSinkAddress) {
|
||||
require(_taxLevel < (1 << 64));
|
||||
redistributionItem memory initialRedistribution;
|
||||
|
||||
//require(ABDKMath64x64.toUInt(_decayLevel) == 0);
|
||||
//require(ABDKMath64x64.toUInt(_taxLevel) == 0);
|
||||
|
||||
// ACL setup
|
||||
owner = msg.sender;
|
||||
@ -156,7 +150,7 @@ contract DemurrageTokenSingleNocap {
|
||||
periodDuration = _periodMinutes * 60;
|
||||
demurrageAmount = ABDKMath64x64.fromUInt(1);
|
||||
|
||||
decayLevel = ABDKMath64x64.ln(_decayLevel);
|
||||
taxLevel = ABDKMath64x64.ln(_taxLevel);
|
||||
initialRedistribution = toRedistribution(0, demurrageAmount, 0, 1);
|
||||
redistributions.push(initialRedistribution);
|
||||
|
||||
@ -168,11 +162,11 @@ contract DemurrageTokenSingleNocap {
|
||||
require(_state < 16, 'ERR_INVALID_STATE');
|
||||
require(_state & sealState == 0, 'ERR_ALREADY_LOCKED');
|
||||
sealState |= _state;
|
||||
emit SealStateChange(sealState == maxSealState, sealState);
|
||||
emit SealStateChange(sealState);
|
||||
return uint256(sealState);
|
||||
}
|
||||
|
||||
function isSealed(uint256 _state) public view returns(bool) {
|
||||
function isSealed(uint256 _state) public returns(bool) {
|
||||
require(_state < maxSealState);
|
||||
if (_state == 0) {
|
||||
return sealState == maxSealState;
|
||||
@ -180,25 +174,17 @@ contract DemurrageTokenSingleNocap {
|
||||
return _state & sealState == _state;
|
||||
}
|
||||
|
||||
// Set when token expires.
|
||||
// Value is set it terms of redistribution periods.
|
||||
// Cannot be set to a time in the past.
|
||||
function setExpirePeriod(uint256 _expirePeriod) public {
|
||||
uint256 r;
|
||||
uint256 oldTimestamp;
|
||||
|
||||
require(!isSealed(EXPIRY_STATE));
|
||||
require(!expired);
|
||||
require(msg.sender == owner);
|
||||
r = periodStart + (_expirePeriod * periodDuration);
|
||||
require(r > expires);
|
||||
oldTimestamp = expires;
|
||||
expires = r;
|
||||
emit ExpiryChange(oldTimestamp, expires);
|
||||
}
|
||||
|
||||
// Change max token supply.
|
||||
// Can only increase supply cap, not decrease.
|
||||
function setMaxSupply(uint256 _cap) public {
|
||||
require(!isSealed(CAP_STATE));
|
||||
require(msg.sender == owner);
|
||||
@ -217,7 +203,6 @@ contract DemurrageTokenSingleNocap {
|
||||
// Expire the contract if expire is set and we have gone over the threshold.
|
||||
// Finalizes demurrage up to the timestamp of the expiry.
|
||||
// The first approve, transfer or transferFrom call that hits the ex == 2 will get the tx mined. but without the actual effect. Otherwise we would have to wait until an external egent called applyExpiry to get the correct final balance.
|
||||
// Implements Expire
|
||||
function applyExpiry() public returns(uint8) {
|
||||
if (expired) {
|
||||
return 1;
|
||||
@ -236,33 +221,27 @@ contract DemurrageTokenSingleNocap {
|
||||
}
|
||||
|
||||
// Given address will be allowed to call the mintTo() function
|
||||
// Implements Writer
|
||||
function addWriter(address _minter) public returns (bool) {
|
||||
require(!isSealed(WRITER_STATE));
|
||||
require(!isSealed(MINTER_STATE));
|
||||
require(msg.sender == owner);
|
||||
minter[_minter] = true;
|
||||
return true;
|
||||
}
|
||||
|
||||
// Given address will no longer be allowed to call the mintTo() function
|
||||
// Implements Writer
|
||||
function deleteWriter(address _minter) public returns (bool) {
|
||||
require(!isSealed(WRITER_STATE));
|
||||
require(!isSealed(MINTER_STATE));
|
||||
require(msg.sender == owner || _minter == msg.sender);
|
||||
minter[_minter] = false;
|
||||
return true;
|
||||
}
|
||||
|
||||
// Implements Writer
|
||||
function isWriter(address _minter) public view returns(bool) {
|
||||
return minter[_minter] || _minter == owner;
|
||||
}
|
||||
|
||||
/// Implements ERC20
|
||||
function balanceOf(address _account) public view returns (uint256) {
|
||||
int128 baseBalance;
|
||||
int128 currentDemurragedAmount;
|
||||
uint256 periodCount;
|
||||
uint8 expiryState;
|
||||
|
||||
baseBalance = ABDKMath64x64.fromUInt(baseBalanceOf(_account));
|
||||
|
||||
@ -280,6 +259,7 @@ contract DemurrageTokenSingleNocap {
|
||||
/// Increases base balance for a single account
|
||||
function increaseBaseBalance(address _account, uint256 _delta) private returns (bool) {
|
||||
uint256 oldBalance;
|
||||
uint256 newBalance;
|
||||
uint256 workAccount;
|
||||
|
||||
workAccount = uint256(account[_account]);
|
||||
@ -296,6 +276,7 @@ contract DemurrageTokenSingleNocap {
|
||||
/// Decreases base balance for a single account
|
||||
function decreaseBaseBalance(address _account, uint256 _delta) private returns (bool) {
|
||||
uint256 oldBalance;
|
||||
uint256 newBalance;
|
||||
uint256 workAccount;
|
||||
|
||||
workAccount = uint256(account[_account]);
|
||||
@ -310,25 +291,13 @@ contract DemurrageTokenSingleNocap {
|
||||
return true;
|
||||
}
|
||||
|
||||
// Send full balance of one account to another
|
||||
function sweep(address _account) public returns (uint256) {
|
||||
uint256 v;
|
||||
|
||||
v = account[msg.sender];
|
||||
account[msg.sender] = 0;
|
||||
account[_account] += v;
|
||||
emit Transfer(msg.sender, _account, v);
|
||||
return v;
|
||||
}
|
||||
|
||||
// Creates new tokens out of thin air, and allocates them to the given address
|
||||
// Triggers tax
|
||||
// Implements Minter
|
||||
function mintTo(address _beneficiary, uint256 _amount) public returns (bool) {
|
||||
function mintTo(address _beneficiary, uint256 _amount) external returns (bool) {
|
||||
uint256 baseAmount;
|
||||
|
||||
require(applyExpiry() == 0);
|
||||
require(minter[msg.sender] || msg.sender == owner, 'ERR_ACCESS');
|
||||
require(minter[msg.sender], 'ERR_ACCESS');
|
||||
|
||||
changePeriod();
|
||||
if (maxSupply > 0) {
|
||||
@ -343,18 +312,6 @@ contract DemurrageTokenSingleNocap {
|
||||
return true;
|
||||
}
|
||||
|
||||
// Implements Minter
|
||||
function mint(address _beneficiary, uint256 _amount, bytes calldata _data) public {
|
||||
_data;
|
||||
mintTo(_beneficiary, _amount);
|
||||
}
|
||||
|
||||
// Implements Minter
|
||||
function safeMint(address _beneficiary, uint256 _amount, bytes calldata _data) public {
|
||||
_data;
|
||||
mintTo(_beneficiary, _amount);
|
||||
}
|
||||
|
||||
// Deserializes the redistribution word
|
||||
function toRedistribution(uint256 _participants, int128 _demurrageModifier, uint256 _value, uint256 _period) public pure returns(redistributionItem memory) {
|
||||
redistributionItem memory redistribution;
|
||||
@ -362,7 +319,6 @@ contract DemurrageTokenSingleNocap {
|
||||
redistribution.period = uint32(_period);
|
||||
redistribution.value = uint72(_value);
|
||||
redistribution.demurrage = uint64(uint128(_demurrageModifier) & 0xffffffffffffffff);
|
||||
_participants;
|
||||
return redistribution;
|
||||
|
||||
}
|
||||
@ -425,7 +381,7 @@ contract DemurrageTokenSingleNocap {
|
||||
return lastRedistribution;
|
||||
}
|
||||
|
||||
function getDistribution(uint256 _supply, int128 _demurrageAmount) public pure returns (uint256) {
|
||||
function getDistribution(uint256 _supply, int128 _demurrageAmount) public view returns (uint256) {
|
||||
int128 difference;
|
||||
|
||||
difference = ABDKMath64x64.mul(ABDKMath64x64.fromUInt(_supply), ABDKMath64x64.sub(ABDKMath64x64.fromUInt(1), _demurrageAmount));
|
||||
@ -433,7 +389,7 @@ contract DemurrageTokenSingleNocap {
|
||||
|
||||
}
|
||||
|
||||
function getDistributionFromRedistribution(redistributionItem memory _redistribution) public pure returns (uint256) {
|
||||
function getDistributionFromRedistribution(redistributionItem memory _redistribution) public returns (uint256) {
|
||||
uint256 redistributionSupply;
|
||||
int128 redistributionDemurrage;
|
||||
|
||||
@ -481,7 +437,7 @@ contract DemurrageTokenSingleNocap {
|
||||
lastDemurrageAmount = toRedistributionDemurrageModifier(lastRedistribution);
|
||||
demurrageCounts = (periodDuration * currentPeriod) / 60;
|
||||
// TODO refactor decayby to take int128 then DRY with it
|
||||
nextRedistributionDemurrage = ABDKMath64x64.exp(ABDKMath64x64.mul(decayLevel, ABDKMath64x64.fromUInt(demurrageCounts)));
|
||||
nextRedistributionDemurrage = ABDKMath64x64.exp(ABDKMath64x64.mul(taxLevel, ABDKMath64x64.fromUInt(demurrageCounts)));
|
||||
nextRedistribution = toRedistribution(0, nextRedistributionDemurrage, totalSupply(), nextPeriod);
|
||||
redistributions.push(nextRedistribution);
|
||||
|
||||
@ -524,7 +480,7 @@ contract DemurrageTokenSingleNocap {
|
||||
}
|
||||
|
||||
periodPoint = ABDKMath64x64.fromUInt(periodCount);
|
||||
v = ABDKMath64x64.mul(decayLevel, periodPoint);
|
||||
v = ABDKMath64x64.mul(taxLevel, periodPoint);
|
||||
v = ABDKMath64x64.exp(v);
|
||||
demurrageAmount = ABDKMath64x64.mul(demurrageAmount, v);
|
||||
|
||||
@ -543,7 +499,6 @@ contract DemurrageTokenSingleNocap {
|
||||
return (block.timestamp - _target) / 60;
|
||||
}
|
||||
|
||||
// Equality check for empty redistribution data
|
||||
function isEmptyRedistribution(redistributionItem memory _redistribution) public pure returns(bool) {
|
||||
if (_redistribution.period > 0) {
|
||||
return false;
|
||||
@ -567,7 +522,7 @@ contract DemurrageTokenSingleNocap {
|
||||
valuePoint = ABDKMath64x64.fromUInt(_value);
|
||||
periodPoint = ABDKMath64x64.fromUInt(_period);
|
||||
|
||||
v = ABDKMath64x64.mul(decayLevel, periodPoint);
|
||||
v = ABDKMath64x64.mul(taxLevel, periodPoint);
|
||||
v = ABDKMath64x64.exp(v);
|
||||
v = ABDKMath64x64.mul(valuePoint, v);
|
||||
return ABDKMath64x64.toUInt(v);
|
||||
@ -581,8 +536,7 @@ contract DemurrageTokenSingleNocap {
|
||||
return ABDKMath64x64.toUInt(r);
|
||||
}
|
||||
|
||||
// Triggers tax and/or redistribution
|
||||
// Implements ERC20
|
||||
// Implements ERC20, triggers tax and/or redistribution
|
||||
function approve(address _spender, uint256 _value) public returns (bool) {
|
||||
uint256 baseValue;
|
||||
uint8 ex;
|
||||
@ -599,14 +553,7 @@ contract DemurrageTokenSingleNocap {
|
||||
|
||||
changePeriod();
|
||||
|
||||
// dex code will attempt uint256max approve, but contract cannot handle that size
|
||||
// truncate to biggest possible value
|
||||
if (_value <= VALUE_LIMIT) {
|
||||
baseValue = toBaseAmount(_value);
|
||||
} else {
|
||||
baseValue = VALUE_LIMIT;
|
||||
}
|
||||
|
||||
baseValue = toBaseAmount(_value);
|
||||
allowance[msg.sender][_spender] = baseValue;
|
||||
emit Approval(msg.sender, _spender, _value);
|
||||
return true;
|
||||
@ -639,8 +586,7 @@ contract DemurrageTokenSingleNocap {
|
||||
return true;
|
||||
}
|
||||
|
||||
// Triggers tax and/or redistribution
|
||||
// Implements ERC20
|
||||
// Implements ERC20, triggers tax and/or redistribution
|
||||
function transfer(address _to, uint256 _value) public returns (bool) {
|
||||
uint256 baseValue;
|
||||
bool result;
|
||||
@ -660,8 +606,7 @@ contract DemurrageTokenSingleNocap {
|
||||
return result;
|
||||
}
|
||||
|
||||
// Triggers tax and/or redistribution
|
||||
// Implements ERC20
|
||||
// Implements ERC20, triggers tax and/or redistribution
|
||||
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
|
||||
uint256 baseValue;
|
||||
bool result;
|
||||
@ -687,6 +632,8 @@ contract DemurrageTokenSingleNocap {
|
||||
|
||||
// ERC20 transfer backend for transfer, transferFrom
|
||||
function transferBase(address _from, address _to, uint256 _value) private returns (bool) {
|
||||
uint256 period;
|
||||
|
||||
decreaseBaseBalance(_from, _value);
|
||||
increaseBaseBalance(_to, _value);
|
||||
|
||||
@ -695,22 +642,26 @@ contract DemurrageTokenSingleNocap {
|
||||
|
||||
// Implements EIP173
|
||||
function transferOwnership(address _newOwner) public returns (bool) {
|
||||
require(msg.sender == owner);
|
||||
newOwner = _newOwner;
|
||||
}
|
||||
|
||||
// Implements OwnedAccepter
|
||||
function acceptOwnership() public returns (bool) {
|
||||
address oldOwner;
|
||||
|
||||
require(msg.sender == owner);
|
||||
require(msg.sender == newOwner);
|
||||
oldOwner = owner;
|
||||
owner = _newOwner;
|
||||
|
||||
owner = newOwner;
|
||||
newOwner = address(0);
|
||||
emit OwnershipTransferred(oldOwner, owner);
|
||||
return true;
|
||||
}
|
||||
|
||||
// Explicitly and irretrievably burn tokens
|
||||
// Only token minters can burn tokens
|
||||
// Implements Burner
|
||||
function burn(uint256 _value) public returns(bool) {
|
||||
function burn(uint256 _value) public {
|
||||
require(applyExpiry() == 0);
|
||||
require(minter[msg.sender] || msg.sender == owner, 'ERR_ACCESS');
|
||||
require(minter[msg.sender]);
|
||||
require(_value <= account[msg.sender]);
|
||||
uint256 _delta = toBaseAmount(_value);
|
||||
|
||||
@ -718,19 +669,6 @@ contract DemurrageTokenSingleNocap {
|
||||
decreaseBaseBalance(msg.sender, _delta);
|
||||
burned += _value;
|
||||
emit Burn(msg.sender, _value);
|
||||
return true;
|
||||
}
|
||||
|
||||
// Implements Burner
|
||||
function burn(address _from, uint256 _value, bytes calldata _data) public {
|
||||
require(_from == msg.sender, 'ERR_ONLY_SELF_BURN');
|
||||
_data;
|
||||
burn(_value);
|
||||
}
|
||||
|
||||
// Implements Burner
|
||||
function burn() public returns(bool) {
|
||||
return burn(account[msg.sender]);
|
||||
}
|
||||
|
||||
// Implements ERC20
|
||||
@ -739,45 +677,25 @@ contract DemurrageTokenSingleNocap {
|
||||
}
|
||||
|
||||
// Return total number of burned tokens
|
||||
// Implements Burner
|
||||
function totalBurned() public view returns (uint256) {
|
||||
return burned;
|
||||
}
|
||||
|
||||
// Return total number of tokens ever minted
|
||||
// Implements Burner
|
||||
function totalMinted() public view returns (uint256) {
|
||||
return supply;
|
||||
}
|
||||
|
||||
|
||||
// Implements EIP165
|
||||
function supportsInterface(bytes4 _sum) public pure returns (bool) {
|
||||
if (_sum == 0xb61bc941) { // ERC20
|
||||
if (_sum == 0xc6bb4b70) { // ERC20
|
||||
return true;
|
||||
}
|
||||
if (_sum == 0x5878bcf4) { // Minter
|
||||
if (_sum == 0x449a52f8) { // Minter
|
||||
return true;
|
||||
}
|
||||
if (_sum == 0xbc4babdd) { // Burner
|
||||
if (_sum == 0x01ffc9a7) { // EIP165
|
||||
return true;
|
||||
}
|
||||
if (_sum == 0x0d7491f8) { // Seal
|
||||
if (_sum == 0x9493f8b2) { // EIP173
|
||||
return true;
|
||||
}
|
||||
if (_sum == 0xabe1f1f5) { // Writer
|
||||
return true;
|
||||
}
|
||||
if (_sum == 0x841a0e94) { // Expire
|
||||
return true;
|
||||
}
|
||||
if (_sum == 0x01ffc9a7) { // ERC165
|
||||
return true;
|
||||
}
|
||||
if (_sum == 0x9493f8b2) { // ERC173
|
||||
return true;
|
||||
}
|
||||
if (_sum == 0xd0017968) { // ERC5678Ext20
|
||||
if (_sum == 0x37a47be4) { // OwnedAccepter
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
|
||||
@ -5,7 +5,6 @@ all: single_nocap
|
||||
single_nocap:
|
||||
$(SOLC) DemurrageTokenSingleNocap.sol --abi --evm-version byzantium | awk 'NR==4' > DemurrageTokenSingleNocap.json
|
||||
$(SOLC) DemurrageTokenSingleNocap.sol --bin --evm-version byzantium | awk 'NR==4' > DemurrageTokenSingleNocap.bin
|
||||
$(SOLC) DemurrageTokenSingleNocap.sol --metadata --evm-version byzantium | awk 'NR==4' > DemurrageTokenSingleNocap.metadata.json
|
||||
truncate -s -1 DemurrageTokenSingleNocap.bin
|
||||
|
||||
single: single_nocap
|
||||
|
||||
Loading…
Reference in New Issue
Block a user