Transaction
Transactions● Common
A signed message that transfers bitcoin by consuming existing UTXOs and creating new ones. Contains inputs (references to UTXOs being spent with signatures) and outputs (new UTXOs with locking scripts). Broadcast to the network, validated by nodes, and eventually mined into a block.
Technical Notes
Structure: version, inputs[], outputs[], locktime. SegWit adds witness data. TXID = double-SHA256 of non-witness data. Fee = sum(inputs) - sum(outputs). Min output: dust limit (~546 sats for P2PKH). Max standard tx: 100 kvB.
Metadata
Visibility: Public
Created:1/3/2026by System