A blockchain is a type of distributed ledger in which transaction records are grouped into ordered data structures, commonly called blocks, and linked through cryptographic references according to the network's consensus rules.
Blockchain networks allow multiple participants to maintain and verify a shared transaction history without relying on a single database operator. The exact architecture varies. Public blockchains can permit broad participation, while permissioned blockchains restrict who can read, submit, or validate transactions. Cryptographic linking and consensus make unauthorized historical changes difficult. Finality depends on the specific protocol and legal framework.
Blockchain is one form of distributed ledger technology. A distributed ledger does not need to organize records into a blockchain structure.
Stablecoins rely on blockchain infrastructure for issuance, transfer, smart-contract execution, and transaction history, so network design directly affects fees, throughput, security, and settlement properties.
A stablecoin issued as a token on Ethereum is recorded and transferred through Ethereum's blockchain state and transaction rules.