Circle gives its Bitcoin-backed token one balance across Ethereum and Arc

Circle added its Bitcoin-backed token, cirBTC, to Gateway on Oct. 23, letting holders use one deposited balance across the Ethereum and Arc blockchains. Gateway treats deposits across supported networks as a single spendable balance per asset, reducing the need to keep funds ready on both chains, according to Circle’s announcement.The expansion also adds the EURC stablecoin alongside USDC. Circle’s asset-specific documentation lists cirBTC on Ethereum and Arc mainnet. EURC is supported on those networks plus Avalanche, Base, Solana and World Chain.Gateway keeps a separate balance for each asset. A cirBTC transfer burns the token on the source network and mints cirBTC on the destination; it neither converts the balance into USDC nor transfers native Bitcoin. For an exchange or wallet serving both chains, Circle says the shared inventory can be deployed where a withdrawal or payment needs to land.Fast access follows deposit finalityCircle advertises cross-chain access in under 500 milliseconds once the deposit has finalized and the balance is established. That estimate excludes the initial funding wait and is not guaranteed. Its confirmation table lists an average of roughly 13 to 19...