Overview
- Circle, which launched cirBTC on June 8, issued an ERC‑20 token that the company says is backed 1:1 by native Bitcoin held in segregated accounts at a regulated Circle entity.
- Reserve backing for cirBTC is verifiable in real time through Chainlink Proof of Reserve, which links visible Bitcoin wallet addresses on the Bitcoin blockchain to the token supply.
- Institutions can mint and redeem cirBTC through Circle Mint, giving trading desks and treasury teams a route to deploy BTC into lending, market making, and settlement workflows without selling the underlying Bitcoin.
- cirBTC enters a crowded market dominated by WBTC and Coinbase’s cbBTC, with incumbents holding roughly $8–9 billion and $5.9 billion respectively, so the token will need deep liquidity and protocol integrations to win broad use.
- Circle intends to extend cirBTC beyond Ethereum via its Arc layer‑1, and the product could shift how firms use Bitcoin as collateral if custody, redemption and exchange listings prove reliable at scale.