thumb|Zoroastrian priests (Magi) carrying barsoms. Statuettes from the Oxus Treasure of the Achaemenid Empire, 4th century BC Magi (), or magus (), is the term for priests in Zoroastrianism and earli
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 0x8bf59854111b0ca91edf7db1d483a2ab5482129e3af6b49144046af2300062e4. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb87b197-f443-4a09-a0ae-1b28c701bb83.json and https://artists.proofprofile.net/proofs/artist/cb87b197-f443-4a09-a0ae-1b28c701bb83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).