Bitfinity is a high-performance Layer 2 solution for Bitcoin, designed to support over 1,000 transactions per second. It enables the deployment of Ethereum-compatible smart contracts, written in Solidity, for Bitcoin and related assets like Ordinals and BRC-20 tokens. Built on the Internet Computer, Bitfinity utilizes a threshold cryptographic scheme known as Chain-Key to establish a secure, decentralized bridge with the Bitcoin blockchain. This approach ensures that no single node has access to the threshold key, enhancing security. Developers can interact with Bitfinity using familiar tools such as MetaMask, Remix, and Hardhat, facilitating integration into existing workflows. The platform also offers a block explorer for real-time access to blockchain data, including blocks and transactions.