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 0x8c1174042cb931c19e8cbae7ba7fdc1254f39942b30d54181efa0216dbb3a20e. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1b954d5-b65c-4a8f-902e-e389f18a39f2.json and https://artists.proofprofile.net/proofs/artist/d1b954d5-b65c-4a8f-902e-e389f18a39f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chants de Lourdes, Vol. 2 - Chants Eucharistiques, Chants à la Vierge Marie
Feierliche Messe Lourdes - Grosser Gott: Benedictus, Ave Maria
Chants de Lourdes, Vol.1 - Eglise du Seigneur, Changez vos coeurs
Chants de Lourdes, Vol. 3 - Alleluia, Chantez pour le Seigneur
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862a206b367dc1a36a5f7d55871d56cb262db52f8fb831a69a5916a3f03b0970. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ510800181.
Lourdes - Jean-Paul Lécot au grand orgue de la basilique du Rosaire