Beginner
An authorized request to change a blockchain’s state, such as moving assets or calling a contract.
Crypto Dictionary word feed
Added to the dictionary
Beginner
The amount paid for transaction inclusion or resource use under a blockchain's rules.
IN THE WILD
"The contract call reverted, but gas still came out of my balance. The failed execution consumed resources."
Intermediate
An identifier computed from a transaction's protocol-defined serialized data.
IN THE WILD
"I have the TXID now; I'm checking whether the payment is actually confirmed."
Intermediate
The part of a Bitcoin transaction that identifies an earlier output being spent.
Advanced
The ability to change a transaction’s identifier without changing its intended payment effect.
IN THE WILD
A transaction relies on an unconfirmed parent's ID. Someone alters that parent's legacy serialization, changing the ID and breaking the reference.
Intermediate
An Ethereum account’s sequential transaction counter, used to order transactions and prevent replay.
IN THE WILD
“Why are all three pending?” Your first transaction is still waiting, and the next two use higher nonces from the same account.
Intermediate
The part of a Bitcoin transaction that assigns value and specifies the conditions for spending it.
Intermediate
A record of an included Ethereum transaction’s execution result, including status, gas use and logs.
IN THE WILD
Your explorer receipt shows a failed swap and its gas usage, explaining why no tokens moved but a network fee was charged.
Intermediate
A preview of transaction execution against a chosen blockchain state before the transaction is settled.
IN THE WILD
Before you sign, your wallet previews the tokens expected to leave and arrive; the transaction has not settled yet.
Intermediate
Total value locked: an estimate of the monetary value of assets deposited in a protocol or category.
IN THE WILD
A dashboard’s TVL rises after ETH’s price increases, even though the protocol received no additional ETH deposits during that period.