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 0x0e691addac1e5e9e11d2fbcc5cd0ee729813178f461109579d253a1d99617904. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5c9872a-53cd-427d-a4c0-9e95cfc16e03.json and https://artists.proofprofile.net/proofs/artist/d5c9872a-53cd-427d-a4c0-9e95cfc16e03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kantate / Cantata "O ewiges Feuer, o Ursprung der Liebe" (BWV 34): Coro: O ewiges Feuer, o Ursprung der Liebe
Johann Sebastian Bach: Cantatas / Kantaten BWV 34, BWV 93, BWV 100
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 0xba64de066e95fd219fe51b4201245ffac85517ea2602634650a50f4ef37f5352. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEN420003001.
Kantate / Cantata "O ewiges Feuer, o Ursprung der Liebe" (BWV 34): Recitativo: Herr, unsre Herzen halten dir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78365ff6095d15b63c2f23d214c952b44265fdd8f510c526fdc8fba4cc3816b8. 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/DEN420003002.
Kantate / Cantata "O ewiges Feuer, o Ursprung der Liebe" (BWV 34): Recitativo: Erwählt sich Gott die heilgen Hütten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd574086aa7b1cf256ee2cf361db0cba0c1c92314bbf7b946f8256ab95928af8. 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/DEN420003004.
Kantate / Cantata "Wer nur den lieben Gott lässt walten" (BWV 93): Aria: Ich will auf den Herren schaun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394544837a3d8aa1460e781f14516c535b0662b23f1295459536d27b15052ddc. 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/DEN420003011.
Kantate / Cantata "Wer nur den lieben Gott lässt walten" (BWV 93): Choral: Sing, bet und geh auf Gottes Wegen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf56706a42d145427c07ef1a665e391a8bb4733000158ffe4cb33b74533ab213. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEN420003012.
Kantate / Cantata "Was Gott tut, das ist wohl getan" (BWV 100): Versus II, Aria: Was Gott tut, das ist wohl getan, er wird mich nicht betrügen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ee2a6be1663c588508cc6a4f8bce004b83cd88b93e9a155cd86190d35c383e. 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/DEN420003014.
Kantate / Cantata "Was Gott tut, das ist wohl getan" (BWV 100): Versus IV, Aria: Was Gott tut, das ist wohl getan, er ist mein Licht, mein Leben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4bc64322c79dc23658f3be157e7d4486755ba2c382df672522df7cd8692765. 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/DEN420003016.
Kantate / Cantata "Was Gott tut, das ist wohl getan" (BWV 100): Versus VI, Coro: Was Gott tut, das ist wohl getan, dabei will ich verbleiben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7626e903b3834eaa7be22cd6606b33d5bc31f584c0fa37bee1a0a288e3220848. 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/DEN420003018.
St Matthew Passion 1781 & Magnificat WQ 215
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fc07e6999449c8eab1ac7dc387c7181073c950da3b139a212f086b3a4eddc4. 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/DEAD62404601.
Kantate / Cantata "O ewiges Feuer, o Ursprung der Liebe" (BWV 34): Aria: Wohl euch, ihr auserwählten Seelen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2339cc9fef8f2ecda6de131a42c586ee3db6b3ab7090883aced82810c4171f4b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEN420003003.
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
Kantate / Cantata "O ewiges Feuer, o Ursprung der Liebe" (BWV 34): Coro: Friede über Israel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa734cc6adab450bc632772086343dca2cd7be14a2e9ffea00216d8b3b83d5c99. 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/DEN420003005.
Kantate / Cantata "Wer nur den lieben Gott lässt walten" (BWV 93): Coro: Wer nur den lieben Gott lässt walten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08365b3d3050d53d3b73af0a23a5f3cfbca7ab41002bb9158b129847f6ff67. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/DEN420003006.
Kantate / Cantata "Wer nur den lieben Gott lässt walten" (BWV 93): Recitativo e Choral: Was helfen uns die schweren Sorgen?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5be897c59b20d05df856027300f667a09988320e7b5c7d2cec30960e30e1a. 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/DEN420003007.
Kantate / Cantata "Wer nur den lieben Gott lässt walten" (BWV 93): Aria: Man halte nur ein wenig stille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e03026fad28a119760b2a9b76367fbd398bf63fd5821d30a435ba6fcfb567aa. 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/DEN420003008.
Kantate / Cantata "Wer nur den lieben Gott lässt walten" (BWV 93): Aria: Er kennt die rechten Freudenstunden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c676be6f3de260e98e7a5aadf05b4d04a16cadddc5f0de5d68a49a90d0a1a47. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEN420003009.
Kantate / Cantata "Wer nur den lieben Gott lässt walten" (BWV 93): Recitativo e Choral: Denk nicht in deiner Drangsalshitze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fdd9ca4ea5fc5380970d43ece59a16002326eba2b0f30ca2152e19a407bbb0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEN420003010.
Kantate / Cantata "Was Gott tut, das ist wohl getan" (BWV 100): Versus I, Coro: Was Gott tut, das ist wohl getan, es bleibt gerecht sein Wille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f65ce6c89be2fc041859ba26e715064a3472fba43d6ddd29b05d5cb0b454330. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEN420003013.
Kantate / Cantata "Was Gott tut, das ist wohl getan" (BWV 100): Versus III, Aria: Was Gott tut, das ist wohl getan, er wird mich wohl bedenken
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668e86c0567068d46432d092f45bcd06a9a34484d54bb41ddef040fa853f0f74. 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/DEN420003015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c53037a0b38de4dbb7623dc4c41527f2b52fbca2ee0c494840e4a0501dbd28. 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/DEAD62404602.