thumb|A symbolic representation of the Crown, present on the symbols of many institutions in Commonwealth realms The Crown is a political concept used in Commonwealth realms, analogous to the concept
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 0x58ba1905e10bf4524a944b24f44b7aad9a374cb80ef7e40ae263429bd0ee6d46. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4c6c3ae-94c3-4da9-9ad1-d38276b115bb.json and https://artists.proofprofile.net/proofs/artist/e4c6c3ae-94c3-4da9-9ad1-d38276b115bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).