thumb|Nansi Richards in 1971 Nansi Richards Jones (14 May 1888 – 21 December 1979) was a Welsh harpist, sometimes known as the "Queen of the Harp"Folktrax 351, "Nansi Richards, Triple Harp". or by h
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 0xec4cbcc3b0c42188a86395bab02e2a63b7f53f2ecf7cf6feb40eee77db5a4339. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79010b74-e9fd-45b6-856e-e779e06ef345.json and https://artists.proofprofile.net/proofs/artist/79010b74-e9fd-45b6-856e-e779e06ef345.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brenhines Y Delyn \ Queen Of The Welsh Harp