thumb|Male Alpine ibex An ibex ( : ibex, ibexes or ibices) also known as the Old World Mountain goat, is any of several species of wild goat (genus Capra), distinguished by the male's large curved hor
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 0xab0ea7cc6f6357ddb847ad90259024e6b6af74e2504c4ce96c9adc399b5534de. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af7586df-e363-4c73-a456-2375ff372f9d.json and https://artists.proofprofile.net/proofs/artist/af7586df-e363-4c73-a456-2375ff372f9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).