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drusselloctal@gmail.com 2014-10-30 13:19:33 -07:00
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@ -182,7 +182,7 @@ For transaction amount 50000000 Satoshis (0.500000 bitcoin) use:
----
====
Once the UTXO is selected, the wallet then produces unlocking scripts containing signatures for each of the UTXO, thereby making them spendable by satisfying their locking script conditions. The wallet adds these UTXO references and unlocking scripts as inputs to the transaction.
Once the UTXO is selected, the wallet then produces unlocking scripts containing signatures for each of the UTXO, thereby making them spendable by satisfying their locking script conditions. The wallet adds these UTXO references and unlocking scripts as inputs to the transaction. <<tx_in_structure>> shows the structure of a transaction input.
[[tx_in_structure]]
.The structure of a transaction input
@ -190,10 +190,10 @@ Once the UTXO is selected, the wallet then produces unlocking scripts containing
|=======
|Size| Field | Description
| 32 bytes | Transaction Hash | Pointer to the transaction containing the UTXO to be spent
| 4 bytes | Output Index | The index number of the UTXO to be spent, first one is 0
| 4 bytes | Output Index | The index number of the UTXO to be spent; first one is 0
| 1-9 bytes (VarInt) | Unlocking-Script Size | Unlocking-Script length in bytes, to follow
| Variable | Unlocking-Script | A script that fulfills the conditions of the UTXO locking-script.
| 4 bytes | Sequence Number | Currently-disabled Tx-replacement feature, set to 0xFFFFFFFF
| Variable | Unlocking-Script | A script that fulfills the conditions of the UTXO locking script.
| 4 bytes | Sequence Number | Currently disabled Tx-replacement feature, set to 0xFFFFFFFF
|=======
Note: The sequence number is used to override a transaction prior to the expiration of the transaction locktime, which is a feature that is currently disabled in bitcoin. Most transactions set this value to the maximum integer value (0xFFFFFFFF) and it is ignored by the bitcoin network. If the transaction has a non-zero locktime, at least one of its inputs must have a sequence number below 0xFFFFFFFF in order to enable locktime.