We are pleased to announce that cirBTC is now officially available on the Ethereum network. Operating as a 1:1 BTC-backed token, it is set to include native Arc support as soon as the mainnet launches.

Built specifically to enhance transparency for tokenized BTC, this asset integrates several essential security and verification measures. To ensure accountability, cirBTC utilizes segregated BTC custody along with disclosed reserve addresses. Additionally, the system incorporates Chainlink Proof of Reserve and provides full access to onchain reserve data for straightforward verification.

By bringing all these elements together, the token establishes a highly transparent reserve foundation for BTC-backed collateral utilized across supported programmable markets.

You can find more details by visiting this link:
https://www.circle.com/blog/cirbtc-a-clearer-reserve-standard-for-wrapped-btc