BitcoinLib v0.4.7

View Source BitcoinLib.Transaction.Spec (BitcoinLib v0.4.7)

A simplified version of a %BitcoinLib.Transaction that can be filled with human readable formats

Link to this section Summary

Types

t()

Functions

add_input!(spec, list)

Adds a human readable input into a transaction spec

add_output(spec, script_pub_key, value)

Adds a human readable output into a transaction spec

sign_and_encode(spec, private_keys)

With the help of a privat key, transforms a transaction into a signed binary that can be sent on the network so funds can be spent

to_transaction(spec)

Create a transaction from a spec

Link to this section Types

Link to this type

t()

View Source 
@type t() :: %BitcoinLib.Transaction.Spec{
  inputs: term(),
  locktime: term(),
  outputs: term(),
  version: term()
}

Link to this section Functions

Link to this function

add_input!(spec, list)

View Source 
@spec add_input!(t(), binary() | list()) :: t()
@spec add_input!(t(), txid: binary(), vout: integer(), redeem_script: list()) :: t()

Adds a human readable input into a transaction spec

examples

 Examples 

iex> %BitcoinLib.Transaction.Spec{}
...> |> BitcoinLib.Transaction.Spec.add_input!(
...>   txid: "6925062befcf8aafae78de879fec2535ec016e251c19b1c0792993258a6fda26",
...>   vout: 1,
...>   redeem_script: "76a914c39658833d83f2299416e697af2fb95a998853d388ac"
...> )
%BitcoinLib.Transaction.Spec{
  inputs: [
    %BitcoinLib.Transaction.Spec.Input{
      txid: "6925062befcf8aafae78de879fec2535ec016e251c19b1c0792993258a6fda26",
      vout: 1,
      redeem_script: [
        %BitcoinLib.Script.Opcodes.Stack.Dup{},
        %BitcoinLib.Script.Opcodes.Crypto.Hash160{},
        %BitcoinLib.Script.Opcodes.Data{value: <<0xc39658833d83f2299416e697af2fb95a998853d3::160>>},
        %BitcoinLib.Script.Opcodes.BitwiseLogic.EqualVerify{},
        %BitcoinLib.Script.Opcodes.Crypto.CheckSig{script: <<0x76a914c39658833d83f2299416e697af2fb95a998853d388ac::200>>}
      ]
    }
  ],
  outputs: []
}
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add_output(spec, script_pub_key, value)

View Source 
@spec add_output(t(), binary() | list(), integer()) :: t()

Adds a human readable output into a transaction spec

examples

 Examples 

iex> p2pkh_script = BitcoinLib.Script.Types.P2pkh.create(<<0xad6a62e2d23d1c060897cd0cc79c42dad715e4c7::160>>)
...> amount = 1000
...> transaction_spec = %BitcoinLib.Transaction.Spec{}
...> transaction_spec
...> |> BitcoinLib.Transaction.Spec.add_output(p2pkh_script, amount)
%BitcoinLib.Transaction.Spec{
  inputs: [],
  outputs: [%BitcoinLib.Transaction.Spec.Output{
    script_pub_key: [
      %BitcoinLib.Script.Opcodes.Stack.Dup{},
      %BitcoinLib.Script.Opcodes.Crypto.Hash160{},
      %BitcoinLib.Script.Opcodes.Data{value: <<0xad6a62e2d23d1c060897cd0cc79c42dad715e4c7::160>>},
      %BitcoinLib.Script.Opcodes.BitwiseLogic.EqualVerify{},
      %BitcoinLib.Script.Opcodes.Crypto.CheckSig{script: <<0x76a914ad6a62e2d23d1c060897cd0cc79c42dad715e4c788ac::200>>}
    ],
    value: 1000
    }
  ]
}
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sign_and_encode(spec, private_keys)

View Source 
@spec sign_and_encode(t(), [BitcoinLib.Key.PrivateKey.t()]) :: binary()

With the help of a privat key, transforms a transaction into a signed binary that can be sent on the network so funds can be spent

examples

 Examples 

iex>  private_key = BitcoinLib.Key.PrivateKey.from_seed_phrase(
...>    "rally celery split order almost twenty ignore record legend learn chaos decade"
...>  )
...>%BitcoinLib.Transaction.Spec{
...>  inputs: [
...>    %BitcoinLib.Transaction.Spec.Input{
...>      txid: "6925062befcf8aafae78de879fec2535ec016e251c19b1c0792993258a6fda26",
...>      vout: 1,
...>      redeem_script: "76a914c39658833d83f2299416e697af2fb95a998853d388ac"
...>    }
...>  ],
...>  outputs: [%BitcoinLib.Transaction.Spec.Output{
...>    script_pub_key: [
...>      %BitcoinLib.Script.Opcodes.Stack.Dup{},
...>      %BitcoinLib.Script.Opcodes.Crypto.Hash160{},
...>      %BitcoinLib.Script.Opcodes.Data{value: <<0xad6a62e2d23d1c060897cd0cc79c42dad715e4c7::160>>},
...>      %BitcoinLib.Script.Opcodes.BitwiseLogic.EqualVerify{},
...>      %BitcoinLib.Script.Opcodes.Crypto.CheckSig{}
...>    ],
...>    value: 1000
...>    }
...>  ]
...>}
...>  |> BitcoinLib.Transaction.Spec.sign_and_encode([private_key])
{
  :ok,
  "020000000126da6f8a25932979c0b1191c256e01ec3525ec9f87de78aeaf8acfef2b062569010000006b483045022100fdb5f58ab2dd24aeea72c0f832abde538e176f4474b3fe62a9c6e7e8a1a79e92022049565926bb564b996a19c6c3abd1dfbf35f9432ea7aadb10976dacee97d2e10c012102702ded1cca9816fa1a94787ffc6f3ace62cd3b63164f76d227d0935a33ee48c3fdffffff01e8030000000000001976a914ad6a62e2d23d1c060897cd0cc79c42dad715e4c788ac2caf2400"
}
Link to this function

to_transaction(spec)

View Source 
@spec to_transaction(t()) :: BitcoinLib.Transaction.t()

Create a transaction from a spec

examples

 Examples 

iex>  %BitcoinLib.Transaction.Spec{
...>    inputs: [
...>      %BitcoinLib.Transaction.Spec.Input{
...>        txid: "6925062befcf8aafae78de879fec2535ec016e251c19b1c0792993258a6fda26",
...>        vout: 1,
...>        redeem_script: "76a914c39658833d83f2299416e697af2fb95a998853d388ac"
...>      }
...>    ],
...>    outputs: [%BitcoinLib.Transaction.Spec.Output{
...>      script_pub_key: [
...>        %BitcoinLib.Script.Opcodes.Stack.Dup{},
...>        %BitcoinLib.Script.Opcodes.Crypto.Hash160{},
...>        %BitcoinLib.Script.Opcodes.Data{value: <<0xad6a62e2d23d1c060897cd0cc79c42dad715e4c7::160>>},
...>        %BitcoinLib.Script.Opcodes.BitwiseLogic.EqualVerify{},
...>        %BitcoinLib.Script.Opcodes.Crypto.CheckSig{}
...>      ],
...>      value: 1000
...>      }
...>    ]
...>  }
...>  |> BitcoinLib.Transaction.Spec.to_transaction()
%BitcoinLib.Transaction{
  version: 2,
  id: "346330ef042212b04fabfdf91ce17f0c615a7458f159d4892d5e8385dbb742ce",
  inputs: [
    %BitcoinLib.Transaction.Input{
      txid: "6925062befcf8aafae78de879fec2535ec016e251c19b1c0792993258a6fda26",
      vout: 1,
      script_sig: "76a914c39658833d83f2299416e697af2fb95a998853d388ac",
      sequence: 4294967293
    }
  ],
  outputs: [
    %BitcoinLib.Transaction.Output{
      value: 1000,
      script_pub_key: [
        %BitcoinLib.Script.Opcodes.Stack.Dup{},
        %BitcoinLib.Script.Opcodes.Crypto.Hash160{},
        %BitcoinLib.Script.Opcodes.Data{value: <<0xad6a62e2d23d1c060897cd0cc79c42dad715e4c7::160>>},
        %BitcoinLib.Script.Opcodes.BitwiseLogic.EqualVerify{},
        %BitcoinLib.Script.Opcodes.Crypto.CheckSig{}
      ]
    }
  ],
  locktime: 2404140,
  witness: []
}