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 0x51dc4fb41e7c67d7399fac3c041886bc08333acb9b0d4422e307468453e5b757. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5dc5706-66c8-46dd-9c92-5591eb51909b.json and https://artists.proofprofile.net/proofs/artist/a5dc5706-66c8-46dd-9c92-5591eb51909b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
St. John Passion, BWV 245: 3. Choral. O grosse Lieb', o Lieb'ohn'alle Masse… (Version IV)
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 0x2f880c7d91c4d55bef8b2df80c9626825164e03c87f13a0ca12562e6f4021828. 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/SEAEJ9821030.
St. John Passion, BWV 245: 5. Choral. Dein Will' gescheh', Herr Gott, zugleich… (Version IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57c3b1cdbff197ff0f166cae8d2f048a0ed7b958d760cca82d6ac3a3f1df809. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEAEJ9821050.
St. John Passion, BWV 245: 10. Recitative. Derselbige Junger war dem Hohenpriester bekannt… (Evangelist, Magd, Petrus, Jesus, Diener) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76be55d3b7b5d22c6d171f804880c40f3ba7ee31fcf13e8b3fad475c92611e91. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEAEJ9821100.
St. John Passion, BWV 245: 16. Recitative. Da fuhreten sie Jesum… (Evangelist, Pilatus, Jesus, Chorus) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797c9cfea17f9610a8fa1801082b11f693544d287938cea385cde6612dd782d6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEAEJ9821160.
St. John Passion, BWV 245: 17. Choral. Ach, grosser Konig, gross zu allen Zeiten… (Version IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c5d4ac2ebecdf061655f4ca3532402978e17d0665634a633bdb01e6759da7d. 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/SEAEJ9821170.
St. John Passion, BWV 245: 27. Recitative. Die Kriegsknechte aber… (Evangelist, Jesus, Chorus) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc69ecf8936f384b18704fcdf50a71aa5483bf1c2347c4c29837ffd3b2f876cd. 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/SEAEJ9822030.
St. John Passion, BWV 245: 1. Chorus. Herr, unser Herrscher, dessen Ruhm… (Version IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90c415edc382b1385b1bd0fdab3a819f7ed6033d5d9b2959d5c8651bb261b55. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/SEAEJ9821010.
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
St. John Passion, BWV 245: 7. Aria. Von den Stricken meiner Sunden… (Alto) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9343b495a51d5cc49a1d23c2501fa7eda7cb18e31f743a2d056822483c8e5c7c. 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/SEAEJ9821070.
St. John Passion, BWV 245: 2. Recitative. Jesus ging mit seinen Jungern… (Evangelist, Jesus, Chorus) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d1e84bad23ae74352fcf2baf80a76f88ea10f9d92316158a024b7e32557811. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/SEAEJ9821020.
St. John Passion, BWV 245: 4. Recitative. Auf dass das Wort erfullet wurde… (Evangelist, Jesus) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa438e242b9675271d2f73df4cec90acdab7c390f23aaac1bb12d58af2bca57ef. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SEAEJ9821040.
St. John Passion, BWV 245: 6. Recitative. Die Schar aber und der Oberhauptmann… (Evangelist) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce577b5d563293da79c427eacd8e45171ee0fd5692364d8f73f66d8bcad5b29. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/SEAEJ9821060.
St. John Passion, BWV 245: 9. Aria. Ich folge dir gleichfalls mit freudigen Schritten… (Soprano) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37120e87f6c3441692c0cc2ab46c4d9047e90837b8d590e033a64e4e4d5ecc98. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SEAEJ9821090.
St. John Passion, BWV 245: 11. Choral. Wer hat dich so geschlagen… (Version IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12642c95af967ae4eae6802dd24dc72c8ba4aa78db442665172a00f2dbf0386f. 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/SEAEJ9821110.
St. John Passion, BWV 245: 12. Recitative. Und Hannas sandte ihn gebunden… (Evangelist, Petrus, Diener, Chorus) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b731f3e422c54a1f0c27c2be3edcc910eb28df2bb2e3276dc0c3b59a7010df6. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/SEAEJ9821120.
St. John Passion, BWV 245: 13. Aria. Ach, mein Sinn… (Tenor) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fbb4496c46250afe947f6c4c80e382b68c6dd6d04bcb1b4d5e88dccef999da. 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/SEAEJ9821130.
St. John Passion, BWV 245: 14. Choral. Petrus, der nicht denkt zuruck… (Version IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd50f4cd36bc474dfb66954ed59b943be630e8fb6a148532fb87fce36828c4f. 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/SEAEJ9821140.
St. John Passion, BWV 245: 15. Choral. Christus, der uns selig macht… (Version IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7465fe5fdc1698113ac2d1f6d2e6dc4a13d015fe3cfb6eab5332d998c067e8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEAEJ9821150.
St. John Passion, BWV 245: 19. Arioso. Betrachte, meine Seel', mit angstlichem Vergnugen… (Bass) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ea10508e7ed973ae52cd3f8dfd0cc123d2d3bb68a4f74197c851710e5d3088. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/SEAEJ9821190.
St. John Passion, BWV 245: 22. Choral. Durch dein Gefangnis, Gottes Sohn… (Version IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9f0dbb725745b306f2e73df035ff5cb883b992fa22e3712efff8850152d182. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/SEAEJ9821220.
St. John Passion, BWV 245: 24. Aria. Eilt, ihr angefocht'nen Seelen… (Bass, Chorus) [Version IV]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40ff60f3536b884c95996f4ed683572eafb5914cf5596928d16d38060489bbc. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEAEJ9821240.