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 0x7d20199d244a5eacd09916b9b596fee22989183ba8223ddf0fb21ab26f132b67. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5933779c-557d-4264-8ed8-b6f09703ab7f.json and https://artists.proofprofile.net/proofs/artist/5933779c-557d-4264-8ed8-b6f09703ab7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Messe h-Moll, BWV 232, I. Kyrie: Kyrie eleison
Johann Sebastian Bach: Messe h-Moll / Mass in B Minor, BWV 232
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 0xa2b6e2c10cf57f3da6a7577074fac7594ebb4c623f9db1196aff46ca0fa74733. 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/DEN421315001.
Messe h-Moll, BWV 232, I. Kyrie: Christe eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af756c06790dee87a951d991ac896c4c7c5bc6c82dae4a75258de1b183517f0. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEN421315002.
Messe h-Moll, BWV 232, I. Kyrie: Kyrie eleison II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33de1b278adfb098b32cb8d1fc388727849c5bf2305e762a13d507b7b6fd8000. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/DEN421315003.
Messe h-Moll, BWV 232, II. Gloria: Gloria in excelsis Deo - Et in terra pax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3adc11e870b89110cc33f09878e0fe4e9666602ebd6c4563c7a185cf6084a9. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DEN421315004.
Messe h-Moll, BWV 232, II. Gloria: Laudamus te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9434a4010cd74dfd126cc4f9b0762883fe80fc74f753e7405034e1dc887314. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEN421315005.
Messe h-Moll, BWV 232, II. Gloria: Gratias agimus tibi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4433de03512d7e9581df52269e51bfac40c1eae4cfa1c9a9ed3c9bd0315b910c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEN421315006.
Messe h-Moll, BWV 232, II. Gloria: Domine Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc384bc4a2440f535b433bd93324b5d7f8229a965d1bfb7e5eb108456a02363a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEN421315007.
Messe h-Moll, BWV 232, II. Gloria: Qui tollis peccata mundi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58a7b12b4bafebc5b8bf9e31e4c008576fceef9abf68bc98da0cba46c2bf737. 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/DEN421315008.
Messe h-Moll, BWV 232, II. Gloria: Qui sedes ad dextram Patris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b77ab0483988cd81dd05792a533a457a8a0e6fd9ae87d261ef4d9f15435847. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/DEN421315009.
Messe h-Moll, BWV 232, II. Gloria: Cum Sancto Spiritu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e768253ab44923280942905ea5932c7264a61d4e80e50d42704eb1a20ac1d35. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DEN421315011.
Messe h-Moll, BWV 232, III. Credo: Credo in unum Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7a331266dcff4424669810b7f869828ba3e35dc1e01ea8109635f7a6bab201. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEN421315012.
Messe h-Moll, BWV 232, III. Credo: Patrem omnipotentem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf848e5c2bf71e8f1ba20975f1633095bc98463041db6df557ccfa342f3541681. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEN421315013.
Messe h-Moll, BWV 232, III. Credo: Et in unum Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a61f8827379201ce9dd9d634a3746c590ac3a0288747352e8cce5ad6e64642. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEN421315014.
Messe h-Moll, BWV 232, III. Credo: Et incarnatus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc127d07f4c46f2cb39949c8a71cacd458c3c02b166830a638f6f8e3508a6cb1d. 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/DEN421315015.
Messe h-Moll, BWV 232, III. Credo: Crucifixus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e47fd22669901acf6a5445ad20699105c624873110daae601c54e2e9a25a93e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEN421315016.
Messe h-Moll, BWV 232, III. Credo: Et resurrexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b744558d439f8fa3604c633b574384eb3e58608f4ea543ad57bb93ddea5074. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEN421315017.
Messe h-Moll, BWV 232, III. Credo: Et in Spiritum sanctum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a195eda650c770dc14521b74943b71eddd81469a706a40e8d31e23f5d635f1. 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/DEN421315018.
Messe h-Moll, BWV 232, III. Credo: Confiteor - Et exspecto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e74606e9547b17191d445732d66318269d4704553c3f6afc66d8b613499f744. 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/DEN421315019.
Messe h-Moll, BWV 232, IV. Sanctus: Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16a564ecfc15329c37d0bf6065e547117a6f00d12e9c740931bab21757015fc. 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/DEN421315020.