As, AS, A. S., A/S or similar may refer to: Art, entertainment, and media A. S. Byatt (born 1936), English critic, novelist, poet and short story writer Adult Swim, a programming block on Cartoon N
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5262f639826934a1b982150fc9396efddb0c532c3831a89c23226edc5ce61c. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd3f7031-ac48-4d27-a9c2-9b00009b6800.json and https://artists.proofprofile.net/proofs/artist/cd3f7031-ac48-4d27-a9c2-9b00009b6800.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).