What is Circle Cross-Chain Transfer Protocol (CCTP)?

Many separate blockchains exist, and moving assets from one to another is the goal of what is called blockchain interoperability. Stablecoins, digital tokens meant to hold a steady value, are one kind of asset that can be moved this way, for example USDC, a dollar-linked stablecoin from Circle. The Cross-Chain Transfer Protocol (CCTP) is a utility for transferring USDC between blockchains by burning it on the source chain and minting it on the destination chain, rather than using traditional bridge liquidity pools. It also offers hooks that trigger automated follow-up actions once the assets arrive.

Written from primary sources and reference pages, and checked against them by an independent AI fact-checker. Drafted with AI assistance.