The cross-chain data bridge launched by Filecoin Foundation and Ava Labs uses smart contracts to transfer data from Avalanche’s C-Chain to the Filecoin network, where it is stored, assigned a unique Content Identifier, and verified through cryptographic proofs returned to Avalanche.

Quotes that support claims

Smart contract triggers send data to Filecoin for storage. Content Identifier (CID) commitments and retrieval proofs continuously verify integrity. Onramp contracts relay storage proof back to the source chain. Payment is conducted on Avalanche and released once proof of storage is relayed back to the source chain.

Data is created on Avalanche’s C-Chain and sent to Filecoin via smart contracts. Filecoin stores the data and generates a unique Content Identifier (CID). Proofs verifying the data’s safe and unchanged storage are sent back to Avalanche on-chain.