Class: Sibit::Script

Inherits:
Object
  • Object
show all
Defined in:
lib/sibit/script.rb

Overview

Bitcoin Script parser.

Parses standard P2PKH and P2WPKH scripts to extract addresses.

Author

Yegor Bugayenko ([email protected])

Copyright

Copyright © 2019-2026 Yegor Bugayenko

License

MIT

Constant Summary collapse

OP_0 = 
0x00
OP_DUP = 
0x76
OP_HASH160 = 
0xa9
OP_EQUALVERIFY = 
0x88
OP_CHECKSIG = 
0xac

Instance Method Summary collapse

Constructor Details

#initialize(hex) ⇒ Script

Returns a new instance of Script.



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# File 'lib/sibit/script.rb', line 26

def initialize(hex)
  @bytes = [hex].pack('H*').bytes
end

Instance Method Details

#address(network = :mainnet) ⇒ Object 



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# File 'lib/sibit/script.rb', line 30

def address(network = :mainnet)
  return p2wpkh_address(network) if p2wpkh?
  return p2pkh_address(network) if p2pkh?
  nil
end

#hash160 ⇒ Object 



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# File 'lib/sibit/script.rb', line 51

def hash160
  return @bytes[2, 20].pack('C*').unpack1('H*') if p2wpkh?
  return @bytes[3, 20].pack('C*').unpack1('H*') if p2pkh?
  nil
end

#p2pkh? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sibit/script.rb', line 36

def p2pkh?
  @bytes.length == 25 &&
    @bytes[0] == OP_DUP &&
    @bytes[1] == OP_HASH160 &&
    @bytes[2] == 20 &&
    @bytes[23] == OP_EQUALVERIFY &&
    @bytes[24] == OP_CHECKSIG
end

#p2wpkh? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sibit/script.rb', line 45

def p2wpkh?
  @bytes.length == 22 &&
    @bytes[0] == OP_0 &&
    @bytes[1] == 20
end