{"copyright_id":"0x810b8b695d4b9abd8e7d20d75cfe7dafd22e5590dbea702a7b502ad7f9cfcb09","name":"Leipzig New Bach Collegium Musicum","registered_at":"2026-06-17T11:52:54Z","symbol":"NIM1387107","token_address":"0xb6463c19b17a27ee51019ea45710e88aea3d1f5e","type":"artist","uuid":"8477db20-2731-47f5-aeeb-ecec174a16a1"}
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 0x810b8b695d4b9abd8e7d20d75cfe7dafd22e5590dbea702a7b502ad7f9cfcb09. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8477db20-2731-47f5-aeeb-ecec174a16a1.json and https://artists.proofprofile.net/proofs/artist/8477db20-2731-47f5-aeeb-ecec174a16a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wachet auf, ruft uns die Stimme, BWV 140: No. 1, Wachet auf, ruft uns die Stimme
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 0x85bdf475ec25b2dc4ec0f0ac0d49608fc83414c073ace5dc656ef90cd638df7a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DES380001692.
Wachet auf, ruft uns die Stimme, BWV 140: No. 2, Er kommt, er kommt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961fdd9bceb13c5115145621b2e3dcc9ca15186845e473a5e3abf3c651a965ca. 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/DES380001693.
Wachet auf, ruft uns die Stimme, BWV 140: No. 3, Wenn kömmst du, mein Heil?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677a40bd7230b94b75e0217b781a33d50fe00f84fd820e3bb972c7c26d31d9f5. 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/DES380001694.
Wachet auf, ruft uns die Stimme, BWV 140: No. 4, Zion hört die Wächter singen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf04721eb4a37714aad4232d0f6f9fc3c2b7df03f252ba9741e04010280d6d3e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DES380001695.
Wachet auf, ruft uns die Stimme, BWV 140: No. 5, So geh herein zu mir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedc4a443da3f76fc49623fe607f4f57af1a9d14d6020afa0b9a74ad644a7ad7. 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/DES380001696.
Wachet auf, ruft uns die Stimme, BWV 140: No. 6, Mein Freund ist mein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfd04a73a657c6c3632cebf08e02ff061d27553b95ed1d22abd7cee36334de1. 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/DES380001697.
Wachet auf, ruft uns die Stimme, BWV 140: No. 7, Gloria sei dir gesungen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad0908d89d3461164fc820e35c1c2de5b47d6ce3ab48a1c8a8746694d1ca291. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DES380001698.
Nun komm, der Heiden Heiland, BWV 61: Ouverture: Nun komm, der Heiden Heiland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27410ec3a17e5fcce1000b2e9d341d16b96e6332e9d487422864eb6a008fc658. 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/DES380001699.
Nun komm, der Heiden Heiland, BWV 61: No. 1, Der Heiland ist gekommen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7dd6ea034a9ee5c6792d53b30451ebcd58a90cc3f33214fcfa6394bcac651c. 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/DES380001700.
Nun komm, der Heiden Heiland, BWV 61: No. 3, Siehe, ich stehe vor der Tür
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5081d1a3e0b884651105e42c3e79671e096943059b9f31973636d44149395e5d. 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/DES380001702.
Nun komm, der Heiden Heiland, BWV 61: No. 5, Amen! Komm, du schöne Freudenkrone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd687f8d7c2421283562a449edee7501c65066e54a7e2b6df07022ed01f280870. 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/DES380001704.
Schwingt freudig euch empor, BWV 36: No. 1, Schwingt freudig euch empor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a54e903f7b0098f39afdb2c31261482ecfa8942e53c6988a1a73ac120e2c3a. 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/DES380001705.
Nun komm, der Heiden Heiland, BWV 61: No. 2, Komm, Jesu, komm zu deiner Kirche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89661c61bc997bc6885128a63c73fdfdbe693d1f5a3c2138631f832987077ce7. 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/DES380001701.
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
Nun komm, der Heiden Heiland, BWV 61: No. 4, Öffne dich, mein ganzes Herze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa924d1d07c7172413bbb5eac0d6a8b70385353cd9778d20f9dd60259cf3b31e9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DES380001703.