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 0xf148b189cd4d5a7e9aae35f81497f85dd6dcfb6c3b4c0aab02f4c83569ddd964. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daa7e866-0b63-49c0-b047-532f92e6e24b.json and https://artists.proofprofile.net/proofs/artist/daa7e866-0b63-49c0-b047-532f92e6e24b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Office à l'Abbaye de Tamié: Dimanche (Louange au long des jours)
Les voix du livre (Cantiques bibliques à l'abbaye de Tamié)
Le chant des frères - De Tamié à Tibhirine
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 0x936cb6ff00145c3a2e3fe65fc5fbf0a9d980085f104c19829139eb167447e944. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FRZ099700483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cd159e8fbf0d17a969d58194fe1e7a1f89c358b20cbda9490c2462061e6dc0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:13Z), 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/FRZ099600579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e48ba903bd1d1491016d74f50c882d22dfccd5ce32d639a490457b4033dcae3. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:00:47Z), 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/FRZ099700321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399428c117513e67d9ae387af37efda805099e2d78b9a27c1930e35e4e118158. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRZ099700447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf677f41407905c4a36977692dded8584fbc52fa898cc7f4ed896d6d5ba7103a1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:58Z), 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/FRZ099500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473ddecf8692a5f63b05232203780818cb97c8ad6c9c8beb0ae8d7a269833223. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/FRZ099700474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4838648611dff365478829014fcbb4a3f666c2b16b83fa080b52b0c4081f1920. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRZ099700485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13105b72c6e78ebaa6fb0973d03b6592d25a96d27ddead8a56a71e8ca882abf8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:41:42Z), 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/FRZ099600367.
Cantique de Siméon NT 3 Sauve-nous Seigneur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c95a7cba8f42b310be6cb29e5d3d831a8d38cd249e6e525ef46c9d98226686. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRZ099600368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443637a23314e90562a2626dd19e5811a767f290a157badfddb4b0868240a4d4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRZ099500190.