Pybitcointools, Python library for Bitcoin signatures and transactions

This is a fork of Vitalik Buterin's original pybitcointools which is no longer maintained.

Short term roadmap:

Possible renaming (pycryptotools?)
Release on pip

Longer-term roadmap:

Integrate pull requests from pybitcointools, e.g. Segwit support
Read the docs page
E-commerce tools (exchange rates, short-time invoices)
Easily gather unspents and broadcast transactions based on a mnemonic
Desktop GUI for easy creation, signing and broadcasting of raw transactions
Seed-based multi-crypto wallet

Contributions:

Needs to be tested: Live network transactions for Litecoin, Dash and Dogecoin
If anyone can help with getting the Bitcoin Cash replay protection signatures working, that would be a big help.
Anyone know a working Dogecoin testnet explorer?

Advantages:

Functions have a simple interface, inputting and outputting in standard formats
Classes for different coins with a common interface
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 with full control
Includes non-bitcoin-specific conversion and JSON utilities

Disadvantages:

Not a full node, has no idea what blocks are
Relies on centralized explorers for blockchain operations

Example usage (best way to learn :) ):

> from bitcoin import *
> c = Bitcoin(testnet=True)
> priv = sha256('a big long brainwallet password')
> priv
'89d8d898b95addf569b458fbbd25620e9c9b19c9f730d5d60102abbabcb72678'
> pub = c.privtopub(priv)
> pub
'041f763d81010db8ba3026fef4ac3dc1ad7ccc2543148041c61a29e883ee4499dc724ab2737afd66e4aacdc0e4f48550cd783c1a73edb3dbd0750e1bd0cb03764f'
> addr = c.pubtoaddr(pub)
> addr
'mwJUQbdhamwemrsR17oy7z9upFh4JtNxm1'
> inputs = c.unspent(addr)
> inputs
[{'output': '350c0292939bf581c847b95b3f864c8c50d51bda68201530b4c23c0e91818988:0', 'value': 55000000, 'time': 'Thu Dec 21 09:43:34 2017'}, {'output': '93b1fe01f0f581d06fce2206c4e0ac0420f5ebc262af31a467ed11ad2b8d884c:0', 'value': 27500000, 'time': 'Thu Dec 21 09:43:34 2017'}]  #Time not needed for use as input
> outs = [{'value': 82211600, 'address': '2N8hwP1WmJrFF5QWABn38y63uYLhnJYJYTF'}, {'value': 90000, 'address': 'mrvHv6ggk5gFMatuJtBKAzktTU1N3MYdu2'}]
> tx = c.mktx(inputs,outs)
> tx
'0100000002888981910e3cc2b430152068da1bd5508c4c863f5bb947c881f59b9392020c350000000000ffffffff4c888d2bad11ed67a431af62c2ebf52004ace0c40622ce6fd081f5f001feb1930000000000ffffffff021073e6040000000017a914a9974100aeee974a20cda9a2f545704a0ab54fdc87905f0100000000001976a9147d13547544ecc1f28eda0c0766ef4eb214de104588ac00000000'
> tx2 = c.sign(tx,0,priv)
> tx2
'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'
> tx3 = c.sign(tx2,1,priv)
> tx3
'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'
> deserialize(tx)
{'ins': [{'outpoint': {'hash': '350c0292939bf581c847b95b3f864c8c50d51bda68201530b4c23c0e91818988', 'index': 0}, 'script': '', 'sequence': 4294967295}, {'outpoint': {'hash': '93b1fe01f0f581d06fce2206c4e0ac0420f5ebc262af31a467ed11ad2b8d884c', 'index': 0}, 'script': '', 'sequence': 4294967295}], 'outs': [{'value': 82211600, 'script': 'a914a9974100aeee974a20cda9a2f545704a0ab54fdc87'}, {'value': 90000, 'script': '76a9147d13547544ecc1f28eda0c0766ef4eb214de104588ac'}], 'version': 1, 'locktime': 0}
> c.pushtx(tx3)
{'status': 'success', 'data': {'network': 'BTCTEST', 'txid': '99d88509d5f0e298bdb6883161c64c7f54444519ce28a0ef3d5942ff4ff7a924'}}

Or using the pybtctool command line interface:

pybtctool random_electrum_seed
484ccb566edb66c65dd0fd2e4d90ef65

pybtctool electrum_privkey 484ccb566edb66c65dd0fd2e4d90ef65 0 0
593240c2205e7b7b5d7c13393b7c9553497854b75c7470b76aeca50cd4a894d7

pybtctool electrum_mpk 484ccb566edb66c65dd0fd2e4d90ef65
484e42865b8e9a6ea8262fd1cde666b557393258ed598d842e563ad9e5e6c70a97e387eefdef123c1b8b4eb21fe210c6216ad7cc1e4186fbbba70f0e2c062c25

pybtctool bip32_master_key 21456t243rhgtucyadh3wgyrcubw3grydfbng
xprv9s21ZrQH143K2napkeoHT48gWmoJa89KCQj4nqLfdGybyWHP9Z8jvCGzuEDv4ihCyoed7RFPNbc9NxoSF7cAvH9AaNSvepUaeqbSpJZ4rbT

pybtctool bip32_ckd xprv9s21ZrQH143K2napkeoHT48gWmoJa89KCQj4nqLfdGybyWHP9Z8jvCGzuEDv4ihCyoed7RFPNbc9NxoSF7cAvH9AaNSvepUaeqbSpJZ4rbT 0
xprv9vfzYrpwo7QHFdtrcvsSCTrBESFPUf1g7NRvayy1QkEfUekpDKLfqvHjgypF5w3nAvnwPjtQUNkyywWNkLbiUS95khfHCzJXFkLEdwRepbw 

pybtctool bip32_privtopub xprv9s21ZrQH143K2napkeoHT48gWmoJa89KCQj4nqLfdGybyWHP9Z8jvCGzuEDv4ihCyoed7RFPNbc9NxoSF7cAvH9AaNSvepUaeqbSpJZ4rbT
xpub661MyMwAqRbcFGfHrgLHpC5R4odnyasAZdefbDkHBcWarJcXh6SzTzbUkWuhnP142ZFdKdAJSuTSaiGDYjvm7bCLmA8DZqksYjJbYmcgrYF

The -s option lets you read arguments from the command line

pybtctool sha256 'some big long brainwallet password' | pybtctool -s privtoaddr | pybtctool -s history
[{'output': u'97f7c7d8ac85e40c255f8a763b6cd9a68f3a94d2e93e8bfa08f977b92e55465e:0', 'value': 50000, 'address': u'1CQLd3bhw4EzaURHbKCwM5YZbUQfA4ReY6'}, {'output': u'4cc806bb04f730c445c60b3e0f4f44b54769a1c196ca37d8d4002135e4abd171:1', 'value': 50000, 'address': u'1CQLd3bhw4EzaURHbKCwM5YZbUQfA4ReY6'}]
pybtctool random_electrum_seed | pybtctool -s electrum_privkey 0 0
593240c2205e7b7b5d7c13393b7c9553497854b75c7470b76aeca50cd4a894d7

The -b option lets you read binary data as an argument

pybtctool sha256 123 | pybtctool -s changebase 16 256 | pybtctool -b changebase 256 16
a665a45920422f9d417e4867efdc4fb8a04a1f3fff1fa07e998e86f7f7a27ae30a

The -j option lets you read json from the command line (-J to split a json list into multiple arguments)

pybtctool unspent 1FxkfJQLJTXpW6QmxGT6oF43ZH959ns8Cq | pybtctool -j select 200000001 | pybtctool -j mksend 1EXoDusjGwvnjZUyKkxZ4UHEf77z6A5S4P:20000 1FxkfJQLJTXpW6QmxGT6oF43ZH959ns8Cq 1000 | pybtctool -s signall 805cd74ca322633372b9bfb857f3be41db0b8de43a3c44353b238c0acff9d523
0100000003d5001aae8358ae98cb02c1b6f9859dc1ac3dbc1e9cc88632afeb7b7e3c510a49000000008b4830450221009e03bb6122437767e2ca785535824f4ed13d2ebbb9fa4f9becc6d6f4e1e217dc022064577353c08d8d974250143d920d3b963b463e43bbb90f3371060645c49266b90141048ef80f6bd6b073407a69299c2ba89de48adb59bb9689a5ab040befbbebcfbb15d01b006a6b825121a0d2c546c277acb60f0bd3203bd501b8d67c7dba91f27f47ffffffff1529d655dff6a0f6c9815ee835312fb3ca4df622fde21b6b9097666e9284087d010000008a473044022035dd67d18b575ebd339d05ca6ffa1d27d7549bd993aeaf430985795459fc139402201aaa162cc50181cee493870c9479b1148243a33923cb77be44a73ca554a4e5d60141048ef80f6bd6b073407a69299c2ba89de48adb59bb9689a5ab040befbbebcfbb15d01b006a6b825121a0d2c546c277acb60f0bd3203bd501b8d67c7dba91f27f47ffffffff23d5f9cf0a8c233b35443c3ae48d0bdb41bef357b8bfb972336322a34cd75c80010000008b483045022014daa5c5bbe9b3e5f2539a5cd8e22ce55bc84788f946c5b3643ecac85b4591a9022100a4062074a1df3fa0aea5ef67368d0b1f0eaac520bee6e417c682d83cd04330450141048ef80f6bd6b073407a69299c2ba89de48adb59bb9689a5ab040befbbebcfbb15d01b006a6b825121a0d2c546c277acb60f0bd3203bd501b8d67c7dba91f27f47ffffffff02204e0000000000001976a914946cb2e08075bcbaf157e47bcb67eb2b2339d24288ac5b3c4411000000001976a914a41d15ae657ad3bfd0846771a34d7584c37d54a288ac00000000

Fun stuff with json:

pybtctool unspent 1EXoDusjGwvnjZUyKkxZ4UHEf77z6A5S4P | pybtctool -j multiaccess value | pybtctool -j sum
625216206372

pybtctool unspent 1EXoDusjGwvnjZUyKkxZ4UHEf77z6A5S4P | pybtctool -j count
6198

To use the testnet you can add --testnet:

pybtctool unspent 2N8hwP1WmJrFF5QWABn38y63uYLhnJYJYTF --testnet
[{"output": "209e5caf8997a3caed4dce0399804ad7fa50c70f866bb7118a42c79de1b76efc:1", "value": 120000000, "time": "Thu Dec 21 08:33:05 2017"}, {"output": "79f38b3e730eea0e44b5a2e645f0979
2d9f8732a823079ba4778110657cbe7b2:0", "value": 100000000, "time": "Thu Dec 21 09:31:55 2017"}, {"output": "99d88509d5f0e298bdb6883161c64c7f54444519ce28a0ef3d5942ff4ff7a924:0", "value
": 82211600, "time": "Thu Dec 21 09:52:00 2017"}, {"output": "80acca12cf4b3b562b583f1dc7e43fff936e432a7ed4b16ac3cd10024820d027:0", "value": 192470000, "time": "Thu Dec 21 09:52:00 20
17"}, {"output": "3e5a3fa342c767d524b653aec51f3efe2122644c57340fbf5f79c75d1911ad35:0", "value": 10000000, "time": "Thu Dec 21 10:18:48 2017"}]

Or the --coin option to use a coin other than bitcoin (bch, btc, dash, doge or ltc)

pybtctool unspent LV3VLesnCi3p3zf26Y86kH2FZxfQq2RjrA --coin ltc
[{"output": "42bfe7376410696e260b2198f484f5df4aa6c744465940f9922ac9f8589670a4:0", "value": 14282660, "time": "Thu Dec 21 10:36:08 2017"}]

pybtctool unspent myLktRdRh3dkK3gnShNj5tZsig6J1oaaJW --coin ltc --testnet
[{"output": "f27a53b9433eeb9d011a8c77439edb7a582a01166756e00ea1076699bfa58371:0", "value": 1993472, "time": "Wed Dec 20 14:38:07 2017"}, {"output": "2a288547460ebe410e98fe63a1900b645
2d95ec318efb0d58a5584ac67f27d93:1", "value": 177961076, "time": "Wed Dec 20 17:01:32 2017"}, {"output": "da0e900e4ed8e3661bef6f6fa5beed78fec3f7b9e4cc87c7120108eba66f270f:0", "value":
 1971905, "time": "Wed Dec 20 17:01:32 2017"}]

Make and broadcast a transaction on the Dash testnet:

pybtctool send cMrziExc6iMV8vvAML8QX9hGDP8zNhcsKbdS9BqrRa1b4mhKvK6f ye9FSaGnHH5A2cjJ9s2y9XTgyJZefB5huz 44907516684 --fee 20000 --coin dash --testnet
{"status": "success", "data": {"txid": "725ff2599700462905aafe658a082c0545c2749f779a7c9114421b4ca65183d0", "network": "DASHTEST"}}

The arguments are the private key of the sender, the receiver's address and the fee (default 10000). Change will be returned to the sender.

Listing of main coin-specific commands:

privkey_to_pubkey : (privkey) -> pubkey
privtopub : (privkey) -> pubkey
pubkey_to_address : (pubkey) -> address
pubtoaddr : (pubkey) -> address
privkey_to_address : (privkey) -> address
privtoaddr : (privkey) -> address
sign : (tx, i, privkey) -> create digital signature of tx with privkey and add to input i
signall : (tx, privkey) -> create digital signature of tx with privkey for all inputs
history : (address) -> tx history of an address
unspent : (address, etc) -> unspent outputs for an addresses
pushtx : (hex or bin tx) -> push a transaction to the blockchain
fetchtx : (txhash) -> fetch a tx from the blockchain
txinputs : (txhash) -> fetch inputs from a previous transaction in a format to be re-used as unspents
send : (privkey, to, value, fee) -> create and a push a simple transaction to send coins to an address and return change to the sender

Listing of main non-coin specific commands:

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
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
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

aohas / pybitcointools