UTXO Set
The current database of all unspent transaction outputs that full nodes use to validate new spends.
The UTXO set contains every output that can currently be spent. Full nodes update it as blocks arrive by deleting spent outputs and adding newly created outputs.
UTXO set size affects node memory, disk use, and validation speed because nodes must check new transaction inputs against it. Dust and spam can increase this burden even when transaction value is tiny.
Related terms
3 linkedExplore connected entries beyond the alphabetical index.
Unspent Transaction Output (UTXO)
→A discrete spendable output on a UTXO blockchain, similar to a digital coin that must be spent whole.
Node
→A device that participates in a blockchain network, with roles varying from transaction validation to block creation.
Full Node
→A full node independently validates blocks and transactions, enforcing a blockchain's consensus rules without trusting a third party.
All terms and definitions may update as the Cryptionary improves.
