alt=Rachel Laurin (in 2010)|thumb Rachel Laurin (), born on 11 August 1961, in Saint-Benoît (Québec), and deceased on 13 August 2023, in Ottawa (Ontario), was a Canadian organist, composer and educato
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 0xe88a303de4847cb399ea9912d6d0a5919b3d08f88dc554bcd2198b3be95ddaa0. 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/393fb808-d9f3-4c89-9e03-d926eb92934e.json and https://artists.proofprofile.net/proofs/artist/393fb808-d9f3-4c89-9e03-d926eb92934e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Laurin: Festivals / Fables / Le Bestiaire
Pilgrimages: Organ Music of Rachel Laurin Inspired by Sacred Themes