cirBTC Goes Live on Arc as Circle Expands Bitcoin Collateral for Onchain Finance
- Backing and verification: cirBTC maintains a 1:1 parity with native Bitcoin held in segregated custody at a federally chartered belief financial institution, with real-time reserve auditing powered by Chainlink Proof of Reserve.
- Preliminary provide and metrics: As of September 20, 2026, the entire provide stood at roughly 949 tokens (with round 397 on Arc and the rest on Ethereum), backed by 951 $BTC value roughly $77 million.
- Instant integrations: Protocols reminiscent of Morpho recorded greater than $150 million in deposits throughout their $USDC and EURC vaults through the first day, leveraging cirBTC as a collateral layer.
cirBTC is now stay on the Arc community, as confirmed this Monday, September 21, by Circle. This launch goals to channel institutional Bitcoin liquidity into lending dApps and decentralized capital markets.
Bitcoin liquidity is now stay on Arc.
cirBTC brings 1:1 $BTC-backed collateral into Arc’s stablecoin-native ecosystem, serving to $BTC change into productive throughout lending, buying and selling, collateral, settlement, and treasury workflows.
$BTC as collateral. $USDC as borrow and settlement asset.…
— Arc (@arc) September 21, 2026
The issuance of cirBTC operates beneath a construction the place every unit represents one Bitcoin held in segregated custody, separate from the issuer’s company steadiness sheet. Technical documentation from Arc particulars that the asset was designed with out native yield mechanisms or embedded derivatives, preserving strict parity to forestall operational dislocations. Market individuals can purchase the token by way of direct swap options on the Arc Portal or via official bridge transfers from the Ethereum community.
Arc’s infrastructure leverages $USDC as its native fuel token and first settlement asset. In accordance with the platform’s technical report, this structure goals to ascertain a credit score framework the place Bitcoin collateral unlocks digital greenback liquidity with out requiring buyers to promote their underlying holdings. Knowledge from the issuing agency means that this mannequin may mitigate counterparty dangers for market makers working throughout decentralized venues.
Reserve Structure and Institutional Credit score
Holdings verification depends on the Chainlink Proof of Reserve mechanism, enabling steady monitoring of the underlying Bitcoin reserves. Official minting studies notice that affiliate Circle Worldwide Bermuda Restricted manages the asset beneath the regulatory oversight of the Bermuda Financial Authority. Company filings point out that this company car serves as a substitute for institutional buying and selling desks that require compliant fiduciary frameworks previous to interacting with good contracts.
Alongside the asset’s community rollout, a digital-asset-backed lending program was activated for eligible Circle Mint clients. This mechanism permits customers to deposit cirBTC into vetted vaults to acquire direct liquidity in $USDC. In accordance with the corporate, lending providers are facilitated by impartial third events, that means the issuer neither originates nor underwrites the credit score danger of the transactions.
The rollout was accompanied by the simultaneous activation of lending markets on Aave V4 and Morpho. On-chain steadiness information disclosed following the debut signifies that Morpho absorbed over $150 million in deposits throughout its stablecoin vaults secured by the brand new wrapped $BTC asset. Business analysts notice that this preliminary pool of liquidity might be a vital consider shaping order e book depth throughout Arc over the approaching weeks.
The event roadmap outlines the gradual addition of latest buying and selling pairs and the rollout of supplemental collateral choices on the Arc Portal earlier than the conclusion of the fourth quarter of 2026.
