diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7d32112
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+__pycache__
+*.pyc
+dist/
+build/
+gmon.out
+*.egg-info
diff --git a/python/MANIFEST.in b/python/MANIFEST.in
index c977965..4c91ed8 100644
--- a/python/MANIFEST.in
+++ b/python/MANIFEST.in
@@ -1 +1 @@
-include **/data/GiftableToken.json **/data/GiftableToken.bin requirements.txt test_requirements.txt
+include **/data/ERC20.json **/data/GiftableToken.json **/data/GiftableToken.bin requirements.txt test_requirements.txt
diff --git a/python/giftable_erc20_token/data/__init__.py b/python/giftable_erc20_token/data/__init__.py
new file mode 100644
index 0000000..01ec837
--- /dev/null
+++ b/python/giftable_erc20_token/data/__init__.py
@@ -0,0 +1,3 @@
+import os
+
+data_dir = os.path.realpath(os.path.dirname(__file__))
diff --git a/python/giftable_erc20_token/runnable/deploy.py b/python/giftable_erc20_token/runnable/deploy.py
index 81d169f..e5e009d 100644
--- a/python/giftable_erc20_token/runnable/deploy.py
+++ b/python/giftable_erc20_token/runnable/deploy.py
@@ -63,8 +63,8 @@ if args.vv:
 elif args.v:
     logg.setLevel(logging.INFO)
 
-block_last = args.w
 block_all = args.ww
+block_last = args.w or block_all
 
 passphrase_env = 'ETH_PASSPHRASE'
 if args.env_prefix != None:
diff --git a/python/requirements.txt b/python/requirements.txt
index 5f2f887..d7adb5b 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,3 +1,4 @@
 confini~=0.3.6rc3
-crypto-dev-signer~=0.4.14b2
-chainlib~=0.0.2a12
+crypto-dev-signer~=0.4.14b3
+chainlib~=0.0.3a1
+potaahto~=0.0.1a2
diff --git a/python/setup.cfg b/python/setup.cfg
index 64317d3..ebc1d5f 100644
--- a/python/setup.cfg
+++ b/python/setup.cfg
@@ -1,10 +1,10 @@
 [metadata]
-name = giftable-erc20-token
-version = 0.0.8a9
-description = Simple ERC20 contract with deployment script that lets any address mint and gift itself tokens.
+name = eth-erc20
+version = 0.0.9a1
+description = ERC20 interface and simple contract with deployment script that lets any address mint and gift itself tokens.
 author = Louis Holbrook
 author_email = dev@holbrook.no
-url = https://gitlab.com/nolash/giftable-erc-token
+url = https://gitlab.com/nolash/eth-erc20
 keywords =
 	ethereum
 classifiers =
@@ -27,14 +27,20 @@ packages =
 	giftable_erc20_token
 	giftable_erc20_token.runnable
 	giftable_erc20_token.data
+	eth_erc20
+	eth_erc20.data
+	eth_erc20.runnable
 
 [options.package_data]
 * =
  	data/GiftableToken.json
  	data/GiftableToken.bin
+ 	data/ERC20.json
 
 [options.entry_points]
 console_scripts =
 	giftable-token-deploy = giftable_erc20_token.runnable.deploy:main
 	giftable-token-gift = giftable_erc20_token.runnable.gift:main
 	giftable-token-minter = giftable_erc20_token.runnable.minter:main
+	erc20-transfer = eth_erc20.runnable.transfer:main
+	erc20-balance = eth_erc20.runnable.balance:main
diff --git a/python/test_requirements.txt b/python/test_requirements.txt
new file mode 100644
index 0000000..88fa46d
--- /dev/null
+++ b/python/test_requirements.txt
@@ -0,0 +1,3 @@
+eth_tester==0.5.0b3
+py-evm==0.3.0a20
+pytest==6.0.1
diff --git a/solidity/GiftableToken.sol b/solidity/GiftableToken.sol
index 2b02dcd..f74c9dc 100644
--- a/solidity/GiftableToken.sol
+++ b/solidity/GiftableToken.sol
@@ -7,16 +7,23 @@ contract GiftableToken {
 	address owner;
 	mapping(address => bool) minters;
 
+	// Implements ERC20
 	string public name;
+	// Implements ERC20
 	string public symbol;
+	// Implements ERC20
 	uint8 public decimals;
+	// Implements ERC20
 	uint256 public totalSupply;
+	// Implements ERC20
 	mapping (address => uint256) public balanceOf;
+	// Implements ERC20
 	mapping (address => mapping (address => uint256)) public allowance;
 
 	event Transfer(address indexed _from, address indexed _to, uint256 _value);
 	event TransferFrom(address indexed _from, address indexed _to, address indexed _spender, uint256 _value);
 	event Approval(address indexed _owner, address indexed _spender, uint256 _value);
+	event Mint(address indexed _minter, address indexed _beneficiary, uint256 _value);
 
 	constructor(string memory _name, string memory _symbol, uint8 _decimals) public {
 		owner = msg.sender;
@@ -32,6 +39,8 @@ contract GiftableToken {
 		balanceOf[_to] += _value;
 		totalSupply += _value;
 
+		emit Mint(msg.sender, _to, _value);
+
 		return true;
 	}
 
@@ -51,6 +60,7 @@ contract GiftableToken {
 		return true;
 	}
 
+	// Implements ERC20
 	function transfer(address _to, uint256 _value) public returns (bool) {
 		require(balanceOf[msg.sender] >= _value);
 		balanceOf[msg.sender] -= _value; 
@@ -59,6 +69,7 @@ contract GiftableToken {
 		return true;
 	}
 
+	// Implements ERC20
 	function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
 		require(allowance[_from][msg.sender] >= _value);
 		require(balanceOf[_from] >= _value);
@@ -69,9 +80,24 @@ contract GiftableToken {
 		return true;
 	}
 
+	// Implements ERC20
 	function approve(address _spender, uint256 _value) public returns (bool) {
 		allowance[msg.sender][_spender] += _value;
 		emit Approval(msg.sender, _spender, _value);
 		return true;
 	}
+
+	// Implements EIP165
+	function supportsInterface(bytes4 _sum) {
+		if (_sum == 0xc6bb4b70) { // ERC20
+			return true;
+		}
+		if (_sum == 0x449a52f8) { // Minter
+			return true;
+		}
+		if (_sum == 0x01ffc9a7) { // EIP165
+			return true;
+		}
+		return false;
+	}
 }