Generating Receiving Addresses from the P2Wash Multi-Sig Script
= Here is an example of how this can be implemented:
import hashlib
import binascii
from embit import bech32
Define constants for the blockchain hash and signature derivation parametersBLOCKCHAIN_HASH = "your_blockchain_hash_here"
SIGDERivationParameter = 3
def derive_signature(p, r, s):
"""Derivate signature using public key"""
return (hexlify(p).decode() + hashlib.sha256(b"s".encode()).digest().hex()) % 1000000
def p2wpub_script(p, sig, r, s, n):
"""Generate P2Wash multi-sig script"""
return bech32.decode_p2wsh_script(
f"1.{sig}.{r}.{s}.{n}",
[hexlify(p).decode(), hashlib.sha256(b"s".encode()).digest().hex()]
)
def main():
Derived public key, signature and random numberp = derive_signature("your_public_key_here", 0x12, 0x34)
r = derive_signature(p, 1, 2)
s = derive_signature(r, 3, 4)
n = derive_signature(s, 5, 6)
Generate P2Wash multi-sig scriptscript = p2wpub_script(p, Nothing, r, s, n)
Print generated scriptprint(script.decode("utf-8"))
if __name__ == "__main__":
main()
Generating receive addresses
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Receive address is a unique identifier that can be used to receive funds from other users. In the context of P2Wash, receiving addresses are usually derived using a similar process.
The p2wpub_script function generates a multi-character P2Wash script, which includes the public key, signature, random number, and non-random parameters (r, s, n). To generate recipient addresses from this script, we need to derive a unique identifier that is not present in the script.
Here is the updated version of the code:
“`python
import hashlib
import binascii
Define constants for the blockchain hash derivation and signature parameters
BLOCKCHAIN_HASH = “your_blockchain_hash_here”
SIGDERivationParameter = 3
def derive_signature(p, r, s):
“””Derivate signature using public key”””
return (hexlify(p).decode() + hashlib.sha256(b”s”.encode()).digest().hex()) % 1000000
def p2wpub_script(p, sig, r, s, n):
“””Generate P2Wash multi-sig script”””
return bech32.decode_p2wsh_script(
f”1.{sig}.{r}.{s}.{n}”,
[hexlify(p).decode(), hashlib.sha256(b”s”.encode()).digest().hex()]
)
def derive_receive_address(script, script_hash):
“””Derivate receive address from P2Wash multi-sig script”””
Extract non-random parameters (r, s, n) and hash
r, s, n = extract_parameters(script)
Derive unique identifier using SHA-256
id = hashlib.sha256(r + s + n.encode()).digest()
return f”2.{id.hex()}{BLOCKCHAIN_HASH}”
def extract_parameters(script):
“””Extract non-random parameters (r, s, n) and hash from script”””
Extract signature, random number and non-random parameters
r, s = extract_signature(script)
id = hashlib.sha256(r + s.encode()).