Bitcoin multisig wallet

Welcome to the Bitcoin multisig wallet! This command line application offers three options for managing your Bitcoin transactions.

To begin run

 python main.py 

Welcome to the Bitcoin multisig wallet!
(1) - Generate a M-of-N Multisig address
(2) - Spend from MULTISIG address to a P2PKH address
(3) - Send to address

Option 1 - Generate a M-of-N Multisig address

To generate a multisig address, use option 1. You will be prompted to enter the following:

Choose one option: 1

Let's create it!

Type public keys separated by comma (,): 0363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e,020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a5,02743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d259
Key 0: 0363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e
Key 1: 020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a5
Key 2: 02743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d259

Type the number signatures required: 2

The application will then generate a multisig address that requires M signatures out of N possible signers to spend funds.

Redeem script hex: 52210363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e21020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a52102743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d25953ae

Address: 2N8MwFDc4ktP3GXnEbfA4M23ca94krWThPw

Option 2 - Spend from MULTISIG address to a P2PKH address

If you have funds in a multisig address and want to spend them, use option 2. You will be prompted to enter the following:

Choose one option: 2

Let's do it!

Type the signing private keys separated by comma (,): cNpE7w6TtF2XRdN5Am36cMTuhyU3kyD6NGj7HVfqWkSYWEYsGTzb,cMaoSLrJdVuFcf4M3z6SApQDXi95bnDh7hpqJSLspsswa5xDNCzX
Key 0: cNpE7w6TtF2XRdN5Am36cMTuhyU3kyD6NGj7HVfqWkSYWEYsGTzb
Key 1: cMaoSLrJdVuFcf4M3z6SApQDXi95bnDh7hpqJSLspsswa5xDNCzX

Type the others public keys separated by comma (,) to recreate the redeem script: 02743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d259
Key 0: 02743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d259

Type the P2SH address do spend from: 2N8MwFDc4ktP3GXnEbfA4M23ca94krWThPw

Type the P2PKH address do send to: mhgy4V9xfeDhBujvvv55dhVPw4FRiepYQr

Now, let's setup the connection to the node

Type the rpc user: user

Type the rpc password: password

Type the rpc host: 127.0.0.1

Type the rpc port: 18332

The application will then create a transaction that spends funds from the multisig address and sends them to the destination address.

Redeem script is:  52210363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e21020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a52102743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d25953ae

Searching UTXOs of address: 2N8MwFDc4ktP3GXnEbfA4M23ca94krWThPw

Found:
idx 0 unspent {'txid': '2821b9f1b4ef0e6e4af93435257a7091fe7776ff6427c214844dfc87389a5060', 'vout': 0, 'scriptPubKey': 'a914a5ced2922168ba3782d12fb75b7f043700ed0b4887', 'desc': 'addr(2N8MwFDc4ktP3GXnEbfA4M23ca94krWThPw)#lau7f5dq', 'amount': Decimal('0.01700468'), 'height': 2424994}

Redeem script: ['OP_2', '0363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e', '020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a5', '02743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d259', 'OP_3', 'OP_CHECKMULTISIG']

Redeem script hex: 52210363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e21020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a52102743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d25953ae

Transaction Bytes:  85

Fee rate at:  0.00001000

Amount to sent:  0.01700468

Fees:  0.00085000

Amount in satoshis to be sent (output):  1615468

Raw unsigned transaction: 020000000160509a3887fc4d8414c22764ff7677fe91707a253534f94a6e0eefb4f1b921280000000000ffffffff016ca61800000000001976a91417d50cf8c21a6f61950b0bf1fa5525df8080f48288ac00000000

Signature: 3044022076e47c1e5824e5104fd91ea10ce1206ac00a8c500e2b339de6e8faed59fec54d022014a300c8b5f511563cb200e6652b1c6e4b2542043ea71e431b80d35f50e5c97901

Raw signed transaction: 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

TxId: 09eae27caa5a20c491f9ff522e615fbf2d0a161bca96a484d986d632d310b004

Decoded signed transaction:  {'txid': '09eae27caa5a20c491f9ff522e615fbf2d0a161bca96a484d986d632d310b004', 'hash': '09eae27caa5a20c491f9ff522e615fbf2d0a161bca96a484d986d632d310b004', 'version': 2, 'size': 265, 'vsize': 265, 'weight': 1060, 'locktime': 0, 'vin': [{'txid': '2821b9f1b4ef0e6e4af93435257a7091fe7776ff6427c214844dfc87389a5060', 'vout': 0, 'scriptSig': {'asm': '0 3044022076e47c1e5824e5104fd91ea10ce1206ac00a8c500e2b339de6e8faed59fec54d022014a300c8b5f511563cb200e6652b1c6e4b2542043ea71e431b80d35f50e5c979[ALL] 52210363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e21020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a52102743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d25953ae', 'hex': '00473044022076e47c1e5824e5104fd91ea10ce1206ac00a8c500e2b339de6e8faed59fec54d022014a300c8b5f511563cb200e6652b1c6e4b2542043ea71e431b80d35f50e5c979014c6952210363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e21020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a52102743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d25953ae'}, 'sequence': 4294967295}], 'vout': [{'value': Decimal('0.01615468'), 'n': 0, 'scriptPubKey': {'asm': 'OP_DUP OP_HASH160 17d50cf8c21a6f61950b0bf1fa5525df8080f482 OP_EQUALVERIFY OP_CHECKSIG', 'hex': '76a91417d50cf8c21a6f61950b0bf1fa5525df8080f48288ac', 'address': 'mhgy4V9xfeDhBujvvv55dhVPw4FRiepYQr', 'type': 'pubkeyhash'}}]}

Confirm transaction? (y/n): y

Transaction id:  898453bc2f77957b5edab48c84ff2dffb54642d4632d0014d397d2fdd77adb0c

transaction can be found at https://blockstream.info/testnet/tx/898453bc2f77957b5edab48c84ff2dffb54642d4632d0014d397d2fdd77adb0c

Option 3 - Send to address

If you want to send Bitcoin from a single address to another address, use option 3. You will be prompted to enter the following:

Choose one option: 3

Let's do it!

Type the address to send to: 2N8MwFDc4ktP3GXnEbfA4M23ca94krWThPw

Type the UTXO to send: a3f9b89d4eb851dc3b57fe054b575aa62cdb6b5c502fa124e579b28b74b0b3a2

Type the amount: 0.01700468

Now, let's setup the connection to the node

Type the rpc user: user

Type the rpc password: password

Type the rpc host: 127.0.0.1

Type the rpc port: 18332

The application will then create a transaction that sends the specified amount from the source address to the destination address.

Unsigned transaction:  0200000001a2b3b0748bb279e524a12f505c6bdb2ca65a574b05fe573bdc51b84e9db8f9a30000000000ffffffff0174f219000000000017a914a5ced2922168ba3782d12fb75b7f043700ed0b488700000000

Signed transaction:  02000000000101a2b3b0748bb279e524a12f505c6bdb2ca65a574b05fe573bdc51b84e9db8f9a30000000000ffffffff0174f219000000000017a914a5ced2922168ba3782d12fb75b7f043700ed0b4887024730440220386b67bf404c46f781f4e2a88d68e50e3ed807a3f4a5288b2c4e234076b9093202204c7d1db8191f97125351d602797b391b84f99c65eb6a4666b85f890f50b6c96a012102c1adafb8e0d7cdd4a418edc430bbc8b0e3e5fd8953e7e6b9d98e931489bb437e00000000

Decoded signed transaction: {'txid': '2821b9f1b4ef0e6e4af93435257a7091fe7776ff6427c214844dfc87389a5060', 'hash': '9a028ccc309a856a3d303ec33f91c0d68ac2b1da7a7cadc97eeeed9659bab61f', 'version': 2, 'size': 192, 'vsize': 111, 'weight': 441, 'locktime': 0, 'vin': [{'txid': 'a3f9b89d4eb851dc3b57fe054b575aa62cdb6b5c502fa124e579b28b74b0b3a2', 'vout': 0, 'scriptSig': {'asm': '', 'hex': ''}, 'txinwitness': ['30440220386b67bf404c46f781f4e2a88d68e50e3ed807a3f4a5288b2c4e234076b9093202204c7d1db8191f97125351d602797b391b84f99c65eb6a4666b85f890f50b6c96a01', '02c1adafb8e0d7cdd4a418edc430bbc8b0e3e5fd8953e7e6b9d98e931489bb437e'], 'sequence': 4294967295}], 'vout': [{'value': Decimal('0.01700468'), 'n': 0, 'scriptPubKey': {'asm': 'OP_HASH160 a5ced2922168ba3782d12fb75b7f043700ed0b48 OP_EQUAL', 'hex': 'a914a5ced2922168ba3782d12fb75b7f043700ed0b4887', 'address': '2N8MwFDc4ktP3GXnEbfA4M23ca94krWThPw', 'type': 'scripthash'}}]}

Confirm transaction? (y/n): y

Transaction id:  2821b9f1b4ef0e6e4af93435257a7091fe7776ff6427c214844dfc87389a5060

transaction can be found at https://blockstream.info/testnet/tx/2821b9f1b4ef0e6e4af93435257a7091fe7776ff6427c214844dfc87389a5060

Utils functions

Generation of an 2-of-3 address.

multisig.py main()

Example output

Multisig 2-of-3 address:

Role:  Director
Private key WIF compressed: cNpE7w6TtF2XRdN5Am36cMTuhyU3kyD6NGj7HVfqWkSYWEYsGTzb
Private key WIF: 91s83vwhyvUXuhs62JgSjuDSY2vFfxnLLmoF7TS7TgJ7gm848LR
Public key compressed: 0363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e
Public key: 0463b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e2953764d1f6e8ce8728094b575bdf6bfcfd85626d61887924c2d4018b9e95055
Address: mid8SuNxfvEdMZv5waj7JMJcKMvzU7bTkP

Role:  CFO
Private key WIF compressed: cMaoSLrJdVuFcf4M3z6SApQDXi95bnDh7hpqJSLspsswa5xDNCzX
Private key WIF: 91awUVWkR8TLdAywqi2ggqMDMYyfCWH1w5iegJ53uY1feTj1bDc
Public key compressed: 020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a5
Public key: 040e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a5432619beecacdd1ce20b5702e9294a1b3b9b294e4166be6aa263fc344b98aab2
Address: myNkj8JiMg9cMAUUQsdgvA4hkUi5gy3thZ

Role:  COO
Private key WIF compressed: cVnttw4PT3bCMiUTM9nvNm4E5S5ihCFJqjHTrR3zrQQP18TBTpaS
Private key WIF: 93SoebT9FxsLnvoYoFgQRR2dwviQ3JxMMZEhXE9qT9UW14cR6e7
Public key compressed: 02743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d259
Public key: 04743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d259f58571650efe472a3e3e5bc491688d017feffe8f0f9bbff14eeebeef8399ef90
Address: mqCSW5JoNNDoGxKxXikZKLGy7QUSXtfSjB

Redeem script hex: 52210363b44e0a2ea75a0be1dc5cf403d493f52d37cc8e00e050153e6fc82a4d11260e21020e573e9e7b79303a37e8f9b69cbb1512213b41dee331543d1d395d980237c1a52102743b49d2de0d5e31fb4ecb7d71ee5496e474e003b2853314205edc244c74d25953ae

Address: 2N8MwFDc4ktP3GXnEbfA4M23ca94krWThPw

Requirements

• Python 3.x
• A running Bitcoin Core node with RPC enabled