AmericanFortress Publishes Zero-Knowledge Provenance Proofs for Bridges

AmericanFortress has published Provenance Proofs, a zero-knowledge scheme proving that two wallets on different chains, such as Bitcoin and Solana, derive from the same hidden seed. The goal is to stop bridges and exchanges from paying out to a swapped destination address. A proof takes about 3.1 seconds to build and 253 ms to verify on a 16-core machine.

• Bridges cannot verify who owns the destination address on another chain
• Provenance Proofs link secp256k1 and Ed25519 keys to one hidden seed without revealing it
• Three forms: joint, deferred and persistent tag for different privacy levels
• Proof build ~3.1 s, verification 253 ms on 16 cores using Plonky3