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 0xdb4c77eb92b407a4fb6409835a675dd4a0297b9bfb0d989cc63611ff0ba0dbe3. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0f5ef11-1438-4df7-aca9-341a23e4995b.json and https://artists.proofprofile.net/proofs/artist/a0f5ef11-1438-4df7-aca9-341a23e4995b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O ewiges Feuer, o Ursprung der Liebe, BWV 34: Aria. Wohl euch, ihr auserwahlten Seelen (Alto)
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 0x6ccc574377b284d7aa3b443af087d5b441f4a4a5d48a30df2a947cf98f992cad. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SEAES1181030.
O ewiges Feuer, o Ursprung der Liebe, BWV 34: O ewiges Feuer, o Ursprung der Liebe (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0880fc0539a13338f6e771190509955aa76f34bbbe35f3ae529a9c433dc94a7b. 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/SEAES1181010.
O ewiges Feuer, o Ursprung der Liebe, BWV 34: Friede uber Israel (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa3734ef69b1b3e2eaf6f2da262f9b572856b4e8f2590783ce39ab1bdc712b9. 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/SEAES1181050.
Sei Lob und Ehr dem höchsten Gut, BWV 117: Aria. Ich will dich all mein Leben lang (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d8560fd176d2d388fbac6c2aee7d6507c310a3e055a19b2072a9ed5562f74e. 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/SEAES1181120.
Gott, man lobet dich in der Stille, BWV 120: Jauchzet, ihr erfreuten Stimmen (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb4bcb00e3a9096ee813bd9a1e18fd8c4ef828d5342b4f32ce6b6ae505c9ec8. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/SEAES1181210.
O ewiges Feuer, o Ursprung der Liebe, BWV 34: Recitative. Herr, unsre Herzen halten dir (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae476780982195b207fe60a877d34e3bd7b2589fa89dacf7e0f0bce8c8832ee. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEAES1181020.
O ewiges Feuer, o Ursprung der Liebe, BWV 34: Recitative. Erwahlt sich Gott die heilgen Hutten (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f25cdc3e1fbd747fdfe33b83b66ee54903f19c1e63b6d03577fad611e00961e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEAES1181040.
Sei Lob und Ehr dem höchsten Gut, BWV 117: Sei Lob und Ehr dem hochsten Gut (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a4951b42db80bfe6d8ca6d818870fb3f82a1a76dcc517903286b2e020bcb9f. 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/SEAES1181060.
Sei Lob und Ehr dem höchsten Gut, BWV 117: Ich rief dem Herrn in meiner Not (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d9a243e7f71fbbeb83e779e2b0dba388993034070e0407c50a6ef27921f754. 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/SEAES1181090.
Sei Lob und Ehr dem höchsten Gut, BWV 117: So kommet vor sein Angesicht (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1aabc3ea64d4ec4d052fd2095021b9f8bda9d4444fdb0f71e57f633be142543. 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/SEAES1181140.
Was Gott tut, das ist wohlgetan, BWV 98: Was Gott tut, das ist wohlgetan (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958e784f61d8d096a0a1a357d1f3e3da39029172881d3a33e4785796121aa781. 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/SEAES1181150.
Gott, man lobet dich in der Stille, BWV 120: Aria. Gott, man lobet dich in der Stille (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acd8f575b89386bd37c20c437c1934936b4b8eedb18a6c251e482c434ca9f4d. 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/SEAES1181200.
Gott, man lobet dich in der Stille, BWV 120: Aria. Heil und Segen (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc50d0e0c80680a6d6b19e056385af4a741ba141dfe9caef7b7fc3ff7424959d. 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/SEAES1181230.
Sei Lob und Ehr dem höchsten Gut, BWV 117: Recitative. Es danken dir die Himmelsheer (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b1b061d82731fbebf9db15a54be0cb086e0c063706fab58484b34507ba01c6. 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/SEAES1181070.
Sei Lob und Ehr dem höchsten Gut, BWV 117: Aria. Was unser Gott geschaffen hat (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945369f4fa43a9e4c7f29b1a5146a0fb85b4dff6845f71792cf9dcdc74d20eb4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEAES1181080.
Sei Lob und Ehr dem höchsten Gut, BWV 117: Recitative. Der Herr ist noch und nimmer nicht (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63857c26069ad6db9945c1f9e6a014f4b44fc2f154b411d761e91961c9210884. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEAES1181100.
Sei Lob und Ehr dem höchsten Gut, BWV 117: Aria. Wenn Trost und Hulf ermangeln muss (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01991da04e2209d86339849204ee75ef091fc1fb5597c79e9cdffdb716c789f8. 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/SEAES1181110.
Sei Lob und Ehr dem höchsten Gut, BWV 117: Recitative. Ihr, die ihr Christi Namen nennt (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfd44c67eb4824c2a8c92d62716f8cf1a9e5dc8910f9d4a3f7e37f5676182cf. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/SEAES1181130.
Was Gott tut, das ist wohlgetan, BWV 98: Recitative. Ach Gott! Wenn wirst du mich einmal (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b4d7c8d6369e52060facb8b8e19675d7dc7bbea3e53ea184cb9f850c74a9d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/SEAES1181160.
Was Gott tut, das ist wohlgetan, BWV 98: Aria. Hort, ihr Augen, auf zu weinen! (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac29c2e6508137ab91c1251968f358275c52763956a4d8f275203bf1ee2669a. 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/SEAES1181170.