diff --git a/CHANGELOG b/CHANGELOG
index 9a6b4f1..ec8ab3f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,8 @@
+- 0.8.10
+	* Add tx hash filter to rules
+	* Add cache spec flag to allow other cache backends
+- 0.8.9
+	* Fix pysha dependency
 - 0.8.8
 	* Skip rules filter processing for cache when deactivated
 	* Add match-all flag to rule processing
diff --git a/eth_monitor/cache.py b/eth_monitor/cache.py
new file mode 100644
index 0000000..e6dbca4
--- /dev/null
+++ b/eth_monitor/cache.py
@@ -0,0 +1,33 @@
+# standard imports
+import logging
+from urllib.parse import urlparse
+
+logg = logging.getLogger(__name__)
+
+
+def from_cache_spec(chain_spec, s):
+    o = urlparse(s)
+    path = '.'
+    scheme = None
+    if o.scheme == '':
+        scheme = 'file'
+    else:
+        scheme = o.scheme
+
+    if o.path != '':
+        if o.path[0] != '/':
+            path = os.path.join(path, o.path)
+        else:
+            path = o.path
+
+    logg.debug('parsed scheme {} from cache spec'.format(scheme))
+
+    if scheme == 'file':
+        from eth_cache.store.fs import FileStore
+        return FsStore(chain_spec, cache_root=path)
+       
+    if scheme == 'lmdb':
+        from eth_cache.store.lmdb import LmdbStore
+        return LmdbStore(chain_spec, cache_root=path)
+
+    return None
diff --git a/eth_monitor/cli/arg.py b/eth_monitor/cli/arg.py
index 4a00ed9..ce47139 100644
--- a/eth_monitor/cli/arg.py
+++ b/eth_monitor/cli/arg.py
@@ -10,6 +10,7 @@ def process_args(argparser, args, flags):
     argparser.add_argument('--input', action='append', type=str, help='Add input (recipient) addresses to includes list')
     argparser.add_argument('--output', action='append', type=str, help='Add output (sender) addresses to includes list')
     argparser.add_argument('--exec', action='append', type=str, help='Add exec (contract) addresses to includes list')
+    argparser.add_argument('--txhash', action='append', type=str, help='Add tx hash part to includes list')
     argparser.add_argument('--data', action='append', type=str, help='Add data prefix strings to include list')
     argparser.add_argument('--data-in', action='append', dest='data_in', type=str, help='Add data contain strings to include list')
     argparser.add_argument('--x-data', action='append', dest='x_data', type=str, help='Add data prefix string to exclude list')
@@ -18,6 +19,7 @@ def process_args(argparser, args, flags):
     argparser.add_argument('--x-input', action='append', type=str, dest='x_input', help='Add input (recipient) addresses to excludes list')
     argparser.add_argument('--x-output', action='append', type=str, dest='x_output', help='Add output (sender) addresses to excludes list')
     argparser.add_argument('--x-exec', action='append', type=str, dest='x_exec', help='Add exec (contract) addresses to excludes list')
+    argparser.add_argument('--x-txhash', action='append', type=str, help='Add tx hash part to excludes list')
     argparser.add_argument('--x-address', action='append', type=str, dest='x_address', help='Add addresses as input, output and exec to excludes list')
     argparser.add_argument('--includes-file', type=str, dest='includes_file', help='Load include rules from file')
     argparser.add_argument('--excludes-file', type=str, dest='excludes_file', help='Load exclude rules from file')
diff --git a/eth_monitor/cli/config.py b/eth_monitor/cli/config.py
index 458aff6..f65973f 100644
--- a/eth_monitor/cli/config.py
+++ b/eth_monitor/cli/config.py
@@ -2,13 +2,14 @@
 from .rules import (
         rules_address_args,
         rules_data_args,
+        rules_txhash_args,
         to_config_names,
         )
 
 def process_config(config, arg, args, flags):
     arg_override = {}
 
-    rules_args = rules_address_args + rules_data_args
+    rules_args = rules_address_args + rules_data_args + rules_txhash_args
 
     for rules_arg in rules_args:
         (vy, vn) = to_config_names(rules_arg)
diff --git a/eth_monitor/cli/rules.py b/eth_monitor/cli/rules.py
index 74232f2..8276719 100644
--- a/eth_monitor/cli/rules.py
+++ b/eth_monitor/cli/rules.py
@@ -10,6 +10,10 @@ rules_data_args = [
         'data_in',
             ]
 
+rules_txhash_args = [
+        'txhash',
+        ]
+
 
 def to_config_names(v):
     v = v.upper()
diff --git a/eth_monitor/data/config/monitor.ini b/eth_monitor/data/config/monitor.ini
index e3d3fcc..5b365ec 100644
--- a/eth_monitor/data/config/monitor.ini
+++ b/eth_monitor/data/config/monitor.ini
@@ -11,6 +11,8 @@ data =
 x_data =
 data_in =
 x_data_in =
+txhash =
+x_txhash =
 includes_file =
 excludes_file =
 renderer =
diff --git a/eth_monitor/rules.py b/eth_monitor/rules.py
index b4dfaa8..ea19fe3 100644
--- a/eth_monitor/rules.py
+++ b/eth_monitor/rules.py
@@ -4,6 +4,9 @@ import uuid
 
 # external imports
 from chainlib.eth.address import is_same_address
+from hexathon import same as same_hex
+
+# local imports
 from .error import RuleFail
 
 logg = logging.getLogger()
@@ -150,6 +153,29 @@ class RuleSimple:
                 )
 
 
+class RuleHash:
+
+    def __init__(self, hashes, description=None):
+        self.hashes = hashes
+        self.description = description
+        if self.description == None:
+            self.description = str(uuid.uuid4())
+
+
+    def check(self, sender, recipient, data, tx_hash):
+        for h in self.hashes:
+            if len(tx_hash) >= len(h):
+                if same_hex(tx_hash[:len(h)], h):
+                    return True
+        return False
+
+
+    def __str__(self):
+        return 'Hash ' + self.description + ' hashes {}'.format(
+                self.hashes,
+                )
+
+
 class AddressRules:
 
     def __init__(self, include_by_default=False, match_all=False):
@@ -170,10 +196,10 @@ class AddressRules:
 
 
     def apply_rules(self, tx):
-        return self.apply_rules_addresses(tx.outputs[0], tx.inputs[0], tx.payload, tx.hash)
+        return self.apply_rules_detail(tx.outputs[0], tx.inputs[0], tx.payload, tx.hash)
 
 
-    def apply_rules_addresses(self, sender, recipient, data, tx_hash):
+    def apply_rules_detail(self, sender, recipient, data, tx_hash):
         v = self.include_by_default
         have_fail = False
         have_match = False
diff --git a/eth_monitor/settings.py b/eth_monitor/settings.py
index a5f42e8..3261110 100644
--- a/eth_monitor/settings.py
+++ b/eth_monitor/settings.py
@@ -22,6 +22,7 @@ from eth_monitor.rules import (
         RuleSimple,
         RuleMethod,
         RuleData,
+        RuleHash,
         )
 from eth_monitor.cli.rules import to_config_names
 from eth_monitor.callback import (
@@ -137,6 +138,10 @@ def process_address_arg_rules(settings, config):
             'i': [],
             'x': [],
             },
+        'hash': {
+            'i': [],
+            'x': [],
+            },
         }
     for rules_arg in [
             'input',
@@ -205,6 +210,25 @@ def process_data_arg_rules(settings, config):
     return settings
 
 
+def process_tx_hash_rules(settings, config):
+    rules = settings.get('RULES')
+
+    include_tx = []
+    for v in config.get('ETHMONITOR_TXHASH'):
+        include_tx.append(v.lower())
+    exclude_tx = []
+    for v in config.get('ETHMONITOR_X_TXHASH'):
+        exclude_tx.append(v.lower())
+
+    includes = RuleHash(include_tx, description='INCLUDE')
+    rules.include(includes)
+   
+    excludes = RuleHash(exclude_tx, description='EXCLUDE')
+    rules.exclude(excludes)
+
+    return settings
+
+
 def process_address_file_rules(settings, config): #rules, includes_file=None, excludes_file=None, include_default=False, include_block_default=False):
     rules = settings.get('RULES')
     includes_file = config.get('ETHMONITOR_INCLUDES_FILE')
@@ -277,6 +301,7 @@ def process_arg_rules(settings, config):
     settings = process_address_arg_rules(settings, config)
     settings = process_data_arg_rules(settings, config)
     settings = process_address_file_rules(settings, config)
+    settings = process_tx_hash_rules(settings, config)
     return settings
 
 
diff --git a/man/build/eth-monitor-sync.1 b/man/build/eth-monitor-sync.1
index a24b9fb..952a5ad 100644
--- a/man/build/eth-monitor-sync.1
+++ b/man/build/eth-monitor-sync.1
@@ -140,6 +140,11 @@ Store block data in cache for matching transactions. Requires \fB--cache-dir\fP.
 \fP\fP
 Store transaction data in cache for matching transactions. Requires \fB--cache-dir\fP.
 
+.TP
+\fB--txhash \fI\fIhash
+\fP\fP
+Add a tx hash of interest to match
+
 .TP
 \fB-u\fP, \fB--unsafe\fP
 Allow addresses that do not pass checksum.
@@ -172,6 +177,11 @@ Add an address of disinterest to inputs (recipients) array.
 \fP\fP
 Add an address of disinterest to outputs (sender) array.
 
+.TP
+\fB--x-txhash \fI\fIhash
+\fP\fP
+Add a tx hash of disinterest to match
+
 .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.
diff --git a/man/build/eth-monitor.1 b/man/build/eth-monitor.1
index a24b9fb..952a5ad 100644
--- a/man/build/eth-monitor.1
+++ b/man/build/eth-monitor.1
@@ -140,6 +140,11 @@ Store block data in cache for matching transactions. Requires \fB--cache-dir\fP.
 \fP\fP
 Store transaction data in cache for matching transactions. Requires \fB--cache-dir\fP.
 
+.TP
+\fB--txhash \fI\fIhash
+\fP\fP
+Add a tx hash of interest to match
+
 .TP
 \fB-u\fP, \fB--unsafe\fP
 Allow addresses that do not pass checksum.
@@ -172,6 +177,11 @@ Add an address of disinterest to inputs (recipients) array.
 \fP\fP
 Add an address of disinterest to outputs (sender) array.
 
+.TP
+\fB--x-txhash \fI\fIhash
+\fP\fP
+Add a tx hash of disinterest to match
+
 .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.
diff --git a/man/eth-monitor.overrides b/man/eth-monitor.overrides
index 75a82f4..2276e5a 100644
--- a/man/eth-monitor.overrides
+++ b/man/eth-monitor.overrides
@@ -2,10 +2,12 @@ input	Add an address of interest to inputs (recipients) array. Complements \fB--
 output	Add an address of interest to outputs (sender) array. Complements \fB--address-file\fP.	--output	address
 exec	Add an address of interest to executable address array. Complements \fB--address-file\fP.	--exec	address
 address	Add an address of interest to match any role. Complements \fB--address-file\fP.	--address	address
+txhash	Add a tx hash of interest to match	--txhash	hash
 xinput	Add an address of disinterest to inputs (recipients) array.	--x-input	address
 xoutput	Add an address of disinterest to outputs (sender) array.	--x-output	address
 xexec	Add an address of disinterest to executable address array.	--x-exec	address
 xaddress	Add an address of interest to match any role.	--x-address	address
+xtxhash	Add a tx hash of disinterest to match	--x-txhash	hash
 includedefault	Match all addresses by default. Addresses may be excluded using --excludes-file. If this is set, --input, --output, --exec and --includes-file will have no effect.	--include-default	
 includesfile	Load address include matching rules from file. See \fBMATCHING ADDRESSES\fP.	--includes-file	file
 excludesfile	Load address exclude matching rules from file. See \fBMATCHING ADDRESSES\fP.	--excludes-file	file