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 0x7a10cdf6e64c60eeebe5d585ab03609bfcfbbfd395b78ed8588125c9081b2d4c. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79c8dcdd-30dd-4200-b242-be085577a9ec.json and https://artists.proofprofile.net/proofs/artist/79c8dcdd-30dd-4200-b242-be085577a9ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 39, Chor. "Ruht wohl, ihr heiligen Gebeine"
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 0xfdf0a175dbfd31fe3b003b4b4e5ae5055e532e7accd120b4785d14d8f606d518. 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/GBAYC1602538.
Bach, JS: St John Passion, BWV 245, Pt. 1: No. 5, Choral. "Dein Will gescheh, Herr Gott, zugleich"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b4af2f5a3aea087ffabba9370742d026a0c02d6744c47d6fcdb9eea8a0296a. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/GBAYC1602497.
Bach, JS: St John Passion, BWV 245, Pt. 1: No. 10, Rezitativ. "Derselbige Jünger war dem Hohenpriester bekannt"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cbb305c1d2dcef69d64820cacd818e225d9c8166b9715654a0d71ae92a913b. 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/GBAYC1602502.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 15, Choral. "Christus, der uns selig macht"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f580b715ca4c2ff7a527a5b0ff839e987704587054b46345360d9b587ea68bd. 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/GBAYC1602509.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 18, Rezitativ und Chor. "Da sprach Pilatus zu ihm" - Rezitativ. "Barrabas aber war ein Mörder"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc2dbe4c0f7c0a1a68c216fcd2f36f440420cf0f28933cdbde892f655a2aa65. 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/GBAYC1602512.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 26, Choral. "In meines Herzens Grunde"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f38d78eb0e8d262255cb21df89733ce5b062a2bf9eb1fd75346c20426034fa. 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/GBAYC1602525.
Bach, JS: St John Passion, BWV 245, Pt. 1: No. 3, Choral. "O groβe Lieb'"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d445654e5cdc1a738f9d90b2220567729f4bd375354a87df491cb5fa5a23547. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/GBAYC1602495.
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
Bach, JS: St John Passion, BWV 245, Pt. 1: No. 2, Rezitativ und Chor. "Jesus ging mit seinen Jüngern" - Rezitativ und Chor. "Jesus antwortete"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08718608a978d44a5854c07b5d84596d29a5d999fa8b51aa1ff328a84a1b817b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYC1602494.
Bach, JS: St John Passion, BWV 245, Pt. 1: No. 11, Choral. "Wer hat dich so geschlagen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8a25c1aaf0bf9b27a58e7327ef9af3703881dc1702cc415b387e53f38605c5. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBAYC1602503.
Bach, JS: St John Passion, BWV 245, Pt. 1: No. 12, Rezitativ und Chor. "Und Hannas sandte ihn gebunden" - Rezitativ. "Er leugnete aber und sprach"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2713ed4e57c9e124a332fcf8749fc8f732ced1cde4915b8c6f32f7735407171. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBAYC1602504.
Bach, JS: St John Passion, BWV 245, Pt. 1: No. 14, Choral. "Petrus, der nicht denkt zurück"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afcd49999e62d49abb3d7fce147678e9362fb9d3aa54c0aab65c82af1a3710a. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBAYC1602506.
Bach, JS: St John Passion, BWV 245, Pt. 1: No. 11 bis, Arie mit Chor. "Himmel reiβe, Welt erbebe"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bde86b03ce35fc45f89f5d57c0e83d09a0a508f3111bc468660a9dcb7aecb9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAYC1602507.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 16, Rezitativ und Chor. "Da führeten sie Jesum" - Rezitativ. "Auf daβ erfüllet würde das Wort Jesu"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fd5cfccc764b1d9e52a9d6aec7bfbcd89c13f81270489fc40d8e487f85dcf4. 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/GBAYC1602510.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 17, Choral. "Ach groβer König"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0434709afa5db10f0ddd419ec318a5539ff14f570fa59dfbd9fe9c29c18d6157. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/GBAYC1602511.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 19, Arie. "Betrachte, meine Seel"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b0813c9c81d3559036c83ef2fde295842092132f5870c5da132a3a47677c11. 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/GBAYC1602513.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 21, Rezitativ und Chor. "Und die Kriegsknechte flochten eine Krone" - Rezitativ. "Da Pilatus das Wort hörete"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56e87ae74d305c7c933f5b1ae14b059c79fa9cdf68f3b95573d489161ca67fc. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBAYC1602520.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 22, Choral. "Durch dein Gefängnis, Gottes Sohn"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddc8bc407d704e56b0a3365b9d54a68727d0f96cc7169396df3e45b8331ea31. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBAYC1602521.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 23, Rezitativ und Chor. "Die Jüden aber schrieen und sprachen" - Rezitativ. "Da überantwortete er ihn"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43adf3b02423689509427fdd775b630dadda2fd470cd5cf9b84a3eba3711ef26. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GBAYC1602522.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 25, Rezitativ und Chor. "Allda kreuzigten sie ihn" - Rezitativ. "Pilatus antwortet"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947012ebb931a09f3738e064d584de695c63c44f99c5f7d2d304ef1ef6c65377. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBAYC1602524.
Bach, JS: St John Passion, BWV 245, Pt. 2: No. 27, Rezitativ und Chor. "Die Kriegsknechte aber" - Rezitativ. "Auf daβ erfüllet würde die Schrift"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67416ef26656829a299ebb03bd8681ef1849e43a1fed6c95e87f8efaadda7d8d. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBAYC1602526.