Circle introduced cirBTC, a Bitcoin-backed stablecoin on the Arc Layer-1 blockchain, on September 21, 2026. Each cirBTC token is fully backed 1:1 by real Bitcoin held in reserve and regulated by Bermuda authorities, with on-chain proof of reserves via Chainlink. This allows Bitcoin holders to use their BTC as collateral in DeFi without selling it, attracting over $150 million in lending deposits on its first day through protocols like Morpho and Aave. The launch provides a compliant, auditable way for institutions to leverage Bitcoin within a stablecoin ecosystem, potentially increasing Bitcoin's utility as a productive asset.
The launch of cirBTC, a Bitcoin-backed stablecoin on the Arc blockchain, provides new Bitcoin liquidity options. For readers following cryptocurrency markets, here is Pluang's market snapshot as of Sep 21, 2026 23:51 WIB: out of 50 major cryptocurrencies priced on Pluang, 41 rose and 8 fell. Notable movers include DOGE at Rp1.720 with a 10.82% increase, GRT at Rp416 up 8.80%, and EOS at Rp12.649 rising 8.13%.
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