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 0xfe6fa3887e36680189797c7a0fd0da1ef4c39c87557f4969d3e1cce0fba0f849. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f43e5e55-41ec-411b-acd8-d37daaac8b8f.json and https://artists.proofprofile.net/proofs/artist/f43e5e55-41ec-411b-acd8-d37daaac8b8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Psaumes des dimanches et fêtes - Année A
Chantons en Église : 22 chants de miséricorde et de réconciliation
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 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 0x6b2e95f2d36f0b8b5ce02b6eead3ad085a98b091d13d3cb7a029cb847ffde01d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRZ091500478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf856baf38c1fa9fe8c3f2aabb6ba0ee62640638ef2954f60d8315cf001058f5c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRZ091500473.
Chantons en Église : 33 chants de louange et d'adoration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6d491948e88719c4b5ee74fdba173997fa9df6315453f4b6d93fec9c9b512b. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FR5M81300160.
Psaume 33 "Goûtez et voyez comme est bon le Seigneur" (19e dimanche ordinaire, année B)
Chantons en Église - 22 chants pour le baptême
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7bf6691aba07a85a29a50bb26d72f65416f9d8768f12adea6cfc8dd494db06. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FRZ091400759.
Chantons en Église : chants de pèlerinage (Terre Sainte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0cbe56188b5b3f09da3e0e887a4aabfc6dcb512c55b76d4cbf051f2857db5c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR5M80001170.