--- /dev/null
+How to run a pruning node with leveldb
+
+Pruning nodes use a lightweight database to store address histories.
+Only unspent coins are kept in that database; spent outputs are
+pruned.
+
+
+__________________________________________________________
+1. patch and compile bitcoind.
+
+Install version 0.8 or equivalent.
+
+Note: Even though Electrum's database uses pruning, you cannot use it
+with a pruning bitcoind. A full bitcoin node is required in order to
+know for each address if it has been used. Pruning occurs only at the
+level of the Electrum database.
+
+__________________________________________________________
+
+2. Install python-leveldb:
+
+sudo apt-get install python-leveldb
+
+__________________________________________________________
+
+3. edit /etc/electrum.conf :
+
+[server]
+backend = leveldb
+
+[leveldb]
+dbpath = /path/to/your/database
+
+______________________________________________________________
+
+4. catch up with the blockchain.
+
+In order to speed up the initial catch_up phase, it is recommended to
+locate your database in shared memory:
+
+ dbpath = /run/shm/electrum_db
+
+Once your server has finished catching up, copy your database to disk
+and update the path in /etc/electrum.conf
+
+During the catch_up phase, you can interrupt the server with Ctrl-C;
+it will safely write the current status in the database and exit.
+
+_________________________________
+
+5. enjoy!
+
+Once the server is synchronized, it will listen to ports, and the
+normal way to stop it is to type: ./server.py stop
+
+Other commands are available:
+
+./server info : view connections
+./server load : view the size of the queue
+
+
+
d['outputs'] = []
for i in xrange(n_vout):
o = parse_TxOut(vds, i)
- if o['address'] != "(None)":
- d['outputs'].append(o)
+
+ if o['address'] == "None" and o['value']==0:
+ print("skipping strange tx output with zero value")
+ continue
+
+ # if o['address'] != "None":
+ d['outputs'].append(o)
+
d['lockTime'] = vds.read_uint32()
return d
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1])
+ # strange tx
+ match = [ opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4, opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG, opcodes.OP_NOP ]
+ if match_decoded(decoded, match):
+ return hash_160_to_bc_address(decoded[2][1])
+
#raise BaseException("address not found in script") see ce35795fb64c268a52324b884793b3165233b1e6d678ccaadf760628ec34d76b
- return "(None)"
+ return "None"
def public_key_to_bc_address(public_key):
+ if public_key == 'None': return 'None'
h160 = hash_160(public_key)
return hash_160_to_bc_address(h160)
def hash_160_to_bc_address(h160):
+ if h160 == 'None': return 'None'
vh160 = chr(addrtype) + h160
h = Hash(vh160)
addr = vh160 + h[0:4]