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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f17764694d6ce9615eba375a9cc4347c959e7b4c3b9feb11d0ee70561862a2c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dee09d3c-e74f-428d-9efe-0f2a29d61441.json and https://artists.proofprofile.net/proofs/artist/dee09d3c-e74f-428d-9efe-0f2a29d61441.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thomas Lacôte: Streams 1/10 - Improvisations Grand Orgue de la Trinité, Paris (2024)
Thomas Lacôte: Streams 2/10 – Improvisations Orgue de l'église Saint Pierre & Paul, Ratingen (2024)
Thomas Lacôte: Streams 3/10 – Improvisations Grand Orgue de la Trinité, Paris (2024)
Thomas Lacôte: Streams 4/10 – Improvisations Orgue de l'église Saint Pierre & Paul, Ratingen (2024)
Thomas Lacôte: Streams 8/10 – Improvisations Orgue de l'église Saint Pierre & Paul, Ratingen (2024)
Thomas Lacôte: Streams 5/10 – Improvisations Grand Orgue de la Trinité, Paris (2024)
Thomas Lacôte: Streams 6/10 – Improvisations Orgue de l'église Saint Pierre & Paul, Ratingen (2024)
Thomas Lacôte: Streams 7/10 – Improvisations Grand Orgue de la Trinité, Paris (2024)
Thomas Lacôte: Streams 9/10 – Improvisations Grand Orgue de la Trinité, Paris (2024)
Thomas Lacôte: Streams 10/10 – Improvisations Orgue de l'église Saint Pierre & Paul, Ratingen (2024)