Circle has officially launched cirBTC, its tokenized Bitcoin product, on the Ethereum blockchain. The rollout began with 40 BTC in outstanding supply, marking the stablecoin issuer's entry into the competitive tokenized Bitcoin market.

cirBTC functions as a tokenized representation of Bitcoin residing natively on Ethereum, enabling holders to deploy Bitcoin value within Ethereum-based applications without requiring off-chain transfers. Circle confirmed the deployment in its launch announcement, with contract details published in the company's developer documentation.

The launch positions cirBTC as a bridge between Bitcoin and Ethereum — the two largest cryptocurrency networks by market capitalization — and places Circle in direct competition with established wrapped Bitcoin products. According to CoinDesk reporting, the debut takes aim at Coinbase's wrapped Bitcoin market specifically.

The initial supply of 40 BTC represents the amount of Bitcoin currently backing cirBTC tokens in circulation. As a launch-stage metric, this figure signals that the product is operational but still in its early phases. Outstanding supply will serve as a trackable benchmark for assessing how circulation expands over time.

By deploying on Ethereum, cirBTC is positioned for integration across the network's decentralized finance ecosystem, where tokenized Bitcoin assets are commonly utilized as collateral or as traded instruments. For tokenized Bitcoin products, the key post-launch milestones include protocol integrations, liquidity growth, and expansion of outstanding supply, which can indicate whether the asset is being adopted across more applications beyond its initial launch base.

Circle has been actively broadening its on-chain footprint through parallel initiatives, including a move to establish a national trust bank in the United States. The trajectory of cirBTC will similarly depend on how integrations, liquidity, and supply develop in the coming months.