Post-Quantum-Attested, Sealed Cross-Chain Bridge With Egress Gating.

Hardens the cross-chain bridge with sealed, egress-gated messages. 20 claims.

A bridge between the sovereign attestation chain and an external chain in which each cross-chain message is itself an operator-sealed, post-quantum-signed audit record passed through an egress gate that classifies and authorises egress, and in which the lock-and-mint supply invariant is expressed as a sealed proof verifiable offline. It hardens the most-attacked component in the field by making every cross-chain message a first-class sealed and gated record. Filed 10 June 2026 as GB2613390.0.