Glossary Terms Starting with T

Transaction Data Availability

Transaction data availability means the information needed to reconstruct and verify transactions or state transitions is accessible to network participants. Blockchains may…

Transaction Dependency

A transaction dependency exists when one transaction can be processed only after another has produced a required output, state change, allowance, account…

Transaction Envelope

A transaction envelope is an outer protocol structure that identifies a transaction format and contains or frames the fields needed for decoding,…

Transaction Event

A transaction event is a structured record emitted during transaction execution to describe an application-relevant occurrence, such as a token transfer, order…

Transaction Execution

Transaction execution is the process of applying a valid transaction's instructions to a blockchain's state. It is especially important on programmable blockchains…

Transaction Explorer

A transaction explorer is a web or application interface that displays details about a blockchain transaction, such as status, sender, recipient, amount,…

Transaction Fee

A transaction fee is the amount paid to have a blockchain transaction processed, relayed, ordered, executed, or included. It compensates miners, validators,…

Transaction Finality

Transaction finality is the degree to which a blockchain transaction can be considered irreversible under a network's consensus rules. Some networks provide…

Transaction Finality Risk

Transaction finality risk is the possibility that a transaction treated as settled is later removed, replaced, reversed through protocol or governance action,…

Transaction Frequency

Transaction frequency is how often transactions occur for a network, account, customer, asset, merchant, or application during a defined period. It can…

Transaction Hash

A transaction hash is a cryptographic identifier derived from the encoded data of a blockchain transaction. It allows users and systems to…

Transaction Header

A transaction header is the portion of a transaction format that carries identifying, versioning, routing, or authorization-related metadata separate from the main…

Transaction ID (TxID)

A transaction ID, usually called a TxID, is an identifier calculated from a transaction’s encoded data.

Transaction Inclusion

Transaction inclusion means a network producer placed a transaction into an accepted block, ledger entry, or comparable consensus structure.

Transaction Input

A transaction input identifies coins or another spendable resource that a transaction uses as its source. On Bitcoin, an input refers to…

Transaction Latency

Transaction latency is the elapsed time between defined stages of a transaction lifecycle, such as creation, broadcast, node acceptance, block inclusion, execution,…

Transaction Limit

A transaction limit is a rule that restricts the amount, frequency, count, asset, destination, or cumulative value of transactions within a defined…

Transaction Matching

Transaction matching links records from different systems that describe the same underlying transaction. It uses identifiers and supporting attributes such as amount,…

Transaction Monitoring

Transaction monitoring is the continuous or periodic observation of payment activity to detect unusual behavior, failed processing or changes that need operational…

Transaction Nonce

A transaction nonce is an account-specific sequence value used by some blockchains to order transactions and prevent a signed transaction from being…

Transaction Ordering

Transaction ordering is the protocol and producer process that determines the sequence in which valid transactions execute and affect shared state.

Transaction Output

A transaction output is a new amount and spending condition created by a transaction. In Bitcoin, an output becomes a UTXO until…

Transaction Payload

A transaction payload is the data that expresses what a transaction is intended to do. It may contain transfer details, contract call…

Transaction Pinning

Transaction pinning is an attack or failure pattern in which an adversary exploits transaction relay, replacement or package-fee policies to make it…