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Circle's cirBTC token supply is fully backed by more than 4,400 BTC reserves across Arc and Ethereum.

Protocol Fundamentals
25 Sep 2026
Tokenpost
View Source
Bullish
Circle's cirBTC token supply is fully backed by more than 4,400 BTC reserves across Arc and Ethereum.

Circle's wrapped Bitcoin token, cirBTC, has a total supply of about 4,300 tokens backed by over 4,448 BTC held in reserve, ensuring a one-to-one backing. Most cirBTC tokens are on the Arc network, with the remainder on Ethereum. Launched in June 2026, cirBTC allows Bitcoin holders to use BTC in smart contracts without selling the underlying asset. Custody is managed by a regulated trust bank, with transparent reserve verification via Chainlink Proof of Reserve, providing security and trust for institutional users.

Circle's cirBTC token supply and backing are detailed here, with Pluang market data as of Sep 26, 2026 05:41 WIB: Of 50 major cryptocurrencies priced on Pluang, 41 rose and 8 fell today. Notable movers include AAVE at Rp2.737.500 (+6.28%), ENJ at Rp530 (+5.69%), and LINK at Rp249.848 (+5.68%). The highest daily gain among these is AAVE at +6.28%.

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