1Sec

1Sec is a message-passing bridge linking the Internet Computer with EVM chains. Users lock assets on Ethereum, Arbitrum or Base and receive a wrapped representation on the other side, with the reverse path burning the wrapper and releasing the original. The bridge logic runs natively in Internet Computer canister contracts, using subnet threshold signatures and sub-second finality for verification and signing rather than an external multi-signature committee, and supports assets including ICP, ckBTC, GLDT and USDC.

With the Internet Computer long lacking a channel to outside liquidity, the bridge mainly lets Bitcoin representations such as ckBTC enter EVM DeFi. DefiLlama tracks its data, deposits sit near 1.4 million dollars, and the team ships a TypeScript SDK supporting both direct wallet connections and forwarding-address transfers.