Regina Nathan (born 17 August 1960) is an Irish soprano. Biography Nathan was born in Kuala Lumpur, Malaysia, and was raised in Dublin.The Encyclopaedia of Music in Ireland, ed. Harry White & Barra B
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 0xe8a62c68b9f0421a5ee0d48226326e9c96f386c6a38fd094e5b3f5b7f27dc84d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77e41b87-c2f7-43bf-9f4f-85e80e29514e.json and https://artists.proofprofile.net/proofs/artist/77e41b87-c2f7-43bf-9f4f-85e80e29514e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.