Absolute Finality
Absolute finality is the strongest claim that an accepted blockchain decision cannot be reversed through the protocol’s normal operation. It is usually…
Crypto & Blockchain Fundamentals
Core concepts behind cryptocurrency, blockchain and distributed systems.
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Terms (367)
Account
An account is a blockchain-recognized state object associated with an address, identifier, key, program, or protocol role. Depending on the network, it…
Account Address
An account address is the blockchain identifier used to locate an account, receive assets, or reference an account in a transaction. Its…
Account Authority
Account authority is the protocol-defined permission to approve actions for a blockchain account, such as signing transactions, changing configuration, upgrading code, or…
Account Code
Account code is executable program logic stored in, referenced by, or associated with a blockchain account. In smart-contract platforms, it determines how…
Account Identifier
An account identifier is any value used by a system to uniquely distinguish one account from others. It may be a blockchain…
Account Key
An account key is a cryptographic key, public key, key pair, or protocol-specific key reference used to identify or authorize actions for…
Account Model
An account model is the set of rules a blockchain uses to represent accounts, balances, state, authorization, and transaction effects. Different account…
Account Nonce
An account nonce is a protocol-managed counter or unique value associated with an account, commonly used to order transactions and prevent the…
Account Ownership
Account ownership is the relationship a blockchain protocol or application uses to identify which key, program, contract, or entity controls an account…
Account State
Account state is the current protocol-recognized data associated with a blockchain account, such as its balance, nonce, code, permissions, owned resources, or…
Account Storage
Account storage is the persistent blockchain state associated with an account, contract, or program-controlled data record. It can hold balances, configuration, permissions,…
Account-Based Model
The account-based model is a blockchain state model in which balances and other data are stored directly under accounts, and transactions update…
Address
A blockchain address is a public destination identifier used to receive assets or reference an account, script, contract, or other on-chain object.…
Address Balance
Address balance is the amount of an asset that a wallet, explorer, or indexer attributes to a blockchain address at a particular…
Address Book
An address book is a wallet or payment application feature that stores labeled blockchain destinations so users can select known recipients without…
Address Book Whitelist
An address book whitelist is a control that restricts transfers to previously approved blockchain addresses, often requiring additional verification or a waiting…
Address Checksum
An address checksum is redundant data encoded with an address so software can detect many typing, copying, or character-substitution errors before a…
Address Explorer
An address explorer is a blockchain-explorer view that displays publicly indexed activity associated with a specific address, such as balances, transactions, token…
Address Format
Address format is the network-defined structure used to represent a blockchain destination as text. It can include a prefix, version, payload, character…
Address Generation
Address generation is the process of creating or deriving a valid blockchain address from cryptographic keys, scripts, contract-creation rules, or protocol-defined account…
Address Lookup Table Account
An address lookup table account is a Solana account that stores a list of addresses so versioned transactions can reference them by…
Address Mapping
Address mapping is the process of associating one address with another identifier, account, network representation, customer record, or destination used by an…
Address Prefix
An address prefix is the leading part of a blockchain address that helps identify its network, format, version, or address type. Prefixes…