Gemma Hasson is a Northern Irish folk singer that recorded three studio albums from 1974 to 1978. Her first one, Introducing Ireland's Gemma Hasson was released in 1974 on Dolphin Records label and pr
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 0x309cc3b7721b7aea77f499582c81996ea6419504a6ba15e7dc3e08c596580f2a. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03f2ea6c-36c9-4dc8-bf42-28f50487e2d7.json and https://artists.proofprofile.net/proofs/artist/03f2ea6c-36c9-4dc8-bf42-28f50487e2d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).