Sequence Number (Transactions)

This definition comes from the technical glossary.


Part of all transactions. A number intended to allow unconfirmed time-locked transactions to be updated before being finalized; not currently used except to disable locktime in a transaction


  • Sequence number

Not To Be Confused With

  • Output index number / vout (this is the 0-indexed number of an output within a transaction used by a later transaction to refer to that specific output)