thumb|upright|right|Mohammad Reza Pahlavi, who ruled Iran from 1941 to 1979, was the last king to hold the title of shah before the Iranian monarchy was abolished by the Iranian Revolution. Shāh (
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 0xb574a0a5e904d94b0d857d0551a0dcd1deb9dae65294bb4ed4d1dc4cf6ee3705. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88511a03-4eaa-4655-9a40-57279293d072.json and https://artists.proofprofile.net/proofs/artist/88511a03-4eaa-4655-9a40-57279293d072.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).