Author: Karl-Johan Alm 2018-04-11 05:21:10
Published on: 2018-04-11T05:21:10+00:00
In an email thread on the bitcoin-dev mailing list, Maksim Solovjov posed two questions related to transaction confirmations. The first question asked what it means for a transaction with zero confirmations to be trusted or not. The response was that a zero-confirmation transaction is considered trusted if it meets certain criteria including being final, not in a reorged block, and having all inputs from the sender. The second question asked when a transaction can have -1 confirmations (conflicted) and what it means to have a conflicted transaction. A transaction is considered conflicted if there exists another transaction that spends the same inputs. If a transaction receives -N confirmations, it means that it was initially mined in a block but that block was orphaned away because a different transaction was mined in a new block, resulting in the original transaction becoming a double spend. This situation can arise due to transaction malleability or double spending.
Updated on: 2023-06-13T01:29:31.209341+00:00