Anser is a genus of geese. Anser may also refer to: People Anser (poet), poet of ancient Rome Anser Farooq, Canadian lawyer Other uses ANSER (organization), a non-profit research organizatio
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 0x5b8b969994b674a290b71ed6999b980606fc4f922f55ee62c6f0609e64cc342a. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cfcfc2f-d0a6-4d5b-958a-66686ba8beba.json and https://artists.proofprofile.net/proofs/artist/0cfcfc2f-d0a6-4d5b-958a-66686ba8beba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).