pybtctools 0.2.0

Python Bitcoin Tool

pybtctools

Python library for Bitcoin signatures and transactions

Features:

• Functions have a simple interface, inputting and outputting in standard formats
• Many functions can be taken out and used individually
• Supports binary, hex and base58
• Transaction deserialization format almost compatible with BitcoinJS
• Electrum and BIP0032 support
• Make and publish a transaction all in a single command line instruction
• Includes non-bitcoin-specific conversion and JSON utilities

Disadvantages:

• Not a full node, has no idea what blocks are
• Relies on centralized service (blockchain.info) for blockchain operations, although operations do have backups (eligius, blockr.io). (Deprecated, please don't rely on these functions, we're working on replace the current API calls)

Usage:

  from bitcoin import *

  priv = sha256('some big long brainwallet password')
  print(priv)
  # 57c617d9b4e1f7af6ec97ca2ff57e94a28279a7eedd4d12a99fa11170e94f5a4'

  pub = privtopub(priv)
  print(pub)
  # '0420f34c2786b4bae593e22596631b025f3ff46e200fc1d4b52ef49bbdc2ed00b26c584b7e32523fb01be2294a1f8a5eb0cf71a203cc034ced46ea92a8df16c6e9'

  addr = pubtoaddr(pub)
  print(addr)
  # '1CQLd3bhw4EzaURHbKCwM5YZbUQfA4ReY6'

  h = history(addr)
  print(h)
  # [{'output': u'97f7c7d8ac85e40c255f8a763b6cd9a68f3a94d2e93e8bfa08f977b92e55465e:0', 'value': 50000, 'address': u'1CQLd3bhw4EzaURHbKCwM5YZbUQfA4ReY6'}, {'output': u'4cc806bb04f730c445c60b3e0f4f44b54769a1c196ca37d8d4002135e4abd171:1', 'value': 50000, 'address': u'1CQLd3bhw4EzaURHbKCwM5YZbUQfA4ReY6'}]

  outs = [{'value': 90000, 'address': '16iw1MQ1sy1DtRPYw3ao1bCamoyBJtRB4t'}]
  tx = mktx(h,outs)
  print(tx)
  # '01000000025e46552eb977f908fa8b3ee9d2943a8fa6d96c3b768a5f250ce485acd8c7f7970000000000ffffffff71d1abe4352100d4d837ca96c1a16947b5444f0f3e0bc645c430f704bb06c84c0100000000ffffffff01905f0100000000001976a9143ec6c3ed8dfc3ceabcc1cbdb0c5aef4e2d02873c88ac00000000'

  tx2 = sign(tx,0,priv)
  print(tx2)
  # '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'

  tx3 = sign(tx2,1,priv)
  print(tx3)
  # '01000000025e46552eb977f908fa8b3ee9d2943a8fa6d96c3b768a5f250ce485acd8c7f797000000008b483045022100dd29d89a28451febb990fb1dafa21245b105140083ced315ebcdea187572b3990220713f2e554f384d29d7abfedf39f0eb92afba0ef46f374e49d43a728a0ff6046e01410420f34c2786b4bae593e22596631b025f3ff46e200fc1d4b52ef49bbdc2ed00b26c584b7e32523fb01be2294a1f8a5eb0cf71a203cc034ced46ea92a8df16c6e9ffffffff71d1abe4352100d4d837ca96c1a16947b5444f0f3e0bc645c430f704bb06c84c010000008c4930460221008bbaaaf172adfefc3a1315dc7312c88645832ff76d52e0029d127e65bbeeabe1022100fdeb89658d503cf2737cedb4049e5070f689c50a9b6c85997d49e0787938f93901410420f34c2786b4bae593e22596631b025f3ff46e200fc1d4b52ef49bbdc2ed00b26c584b7e32523fb01be2294a1f8a5eb0cf71a203cc034ced46ea92a8df16c6e9ffffffff01905f0100000000001976a9143ec6c3ed8dfc3ceabcc1cbdb0c5aef4e2d02873c88ac00000000'

  pushtx(tx3)
  # 'Transaction Submitted'

CLI

The legacy CLI is not available at the moment

Public interface:

Function	Description
privkey_to_pubkey	(privkey) -> pubkey
privtopub	(privkey) -> pubkey
pubkey_to_address	(pubkey) -> address
pubtoaddr	(pubkey) -> address
privkey_to_address	(privkey) -> address
privtoaddr	(privkey) -> address
add	(key1, key2) -> key1 + key2 (works on privkeys or pubkeys)
multiply	(pubkey, privkey) -> returns pubkey * privkey
ecdsa_sign	(message, privkey) -> sig
ecdsa_verify	(message, sig, pubkey) -> True/False
ecdsa_recover	(message, sig) -> pubkey
random_key	() -> privkey
random_electrum_seed	() -> electrum seed
electrum_stretch	(seed) -> secret exponent
electrum_privkey	(seed or secret exponent, i, type) -> privkey
electrum_mpk	(seed or secret exponent) -> master public key
electrum_pubkey	(seed or secexp or mpk) -> pubkey
bip32_master_key	(seed) -> bip32 master key
bip32_ckd	(private or public bip32 key, i) -> child key
bip32_privtopub	(private bip32 key) -> public bip32 key
bip32_extract_key	(private or public bip32_key) -> privkey or pubkey
deserialize	(hex or bin transaction) -> JSON tx
serialize	(JSON tx) -> hex or bin tx
mktx	(inputs, outputs) -> tx
mksend	(inputs, outputs, change_addr, fee) -> tx
sign	(tx, i, privkey) -> tx with index i signed with privkey
multisign	(tx, i, script, privkey) -> signature
apply_multisignatures	(tx, i, script, sigs) -> tx with index i signed with sigs
scriptaddr	(script) -> P2SH address
mk_multisig_script	(pubkeys, k, n) -> k-of-n multisig script from pubkeys
verify_tx_input	(tx, i, script, sig, pub) -> True/False
tx_hash	(hex or bin tx) -> hash
history	(address1, address2, etc) -> outputs to those addresses
unspent	(address1, address2, etc) -> unspent outputs to those addresses
fetchtx	(txash) -> tx if present
pushtx	(hex or bin tx) -> tries to push to blockchain.info/pushtx
access	(json list/object, prop) -> desired property of that json object
multiaccess	(json list, prop) -> like access, but mapped across each list element
slice	(json list, start, end) -> given slice of the list
count	(json list) -> number of elements
sum	(json list) -> sum of all values