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 0x255c17044d1e468b266833fd5af6c592d755347a8a8850aeb98f00437f4f3a04. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45e9a2b8-f0c3-49c4-b84e-f603d733f1c9.json and https://artists.proofprofile.net/proofs/artist/45e9a2b8-f0c3-49c4-b84e-f603d733f1c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Johann Sebastian Bach: Die Geheimnisse der Harmonie - eine Hörbiografie
Die Geheimnisse der Harmonie: Chapter 1 "Armes Waisenkind": Der Ursprung der musikalisch-Bachischen Familie
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 0x29e5a289ff734b5be61480ff4294fee9593eeccae9f42e282501a482147169c9. 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/DELW72393601.
Die Geheimnisse der Harmonie: Chapter 1 "Armes Waisenkind": Der kleine Sebastian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c7662be272d7f4f0690907555827424abbfcadbd2c2cf812accb7ee606f8de. 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/DELW72393602.
Die Geheimnisse der Harmonie, Chapter 1 "Armes Waisenkind": Die Michaelisschule in Lüneburg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd466438ded341e3064eb4d6e20d5ffc5d1e5f8daf7d1a880c144a8580005460b. 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/DELW72393605.
Die Geheimnisse der Harmonie, Chapter 7 "Wunderliche Obrigkeit": Das Weihnachtsoratorium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861ae86463aa2aa174bd9b90fb4af1a472196437de36cc83d296098c29866975. 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/DELW72393635.
Die Geheimnisse der Harmonie, Chapter 8 "Es erhub sich ein Streit ": Eisengallus-Tinte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbec4a284c8e3f2e9feb0cd659ed8161ebffc956c6178b3d4ab235c5e78bdf2. 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/DELW72393636.
Die Geheimnisse der Harmonie, Chapter 5 "Regulierte Kirchenmusik": Kantor in Leipzig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dd6e93100073879034ceaa105a2ca8f84fc9db421777b9621a85d0ba1d2168. 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/DELW72393622.
Die Geheimnisse der Harmonie, Chapter 2 "Fremde Töne": Urlaubsüberschreitung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb501940ce1a07b869795d161ec18f68790f5c52b367d7a00a8a8bac7ede5808e. 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/DELW72393608.
Die Geheimnisse der Harmonie, Chapter 5 "Regulierte Kirchenmusik": Passionsoratorien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cdc9b312aa6e921db694f2e456c70ef8891460a2ac7fbca1715ef08348b56c. 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/DELW72393625.
Die Geheimnisse der Harmonie, Chapter 5 "Regulierte Kirchenmusik": Das Kreuz mit den Obrigkeiten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8ec35916303ea5afbebc4b64c780803a7d27f2ee0ea09ef8fffe252e760c46. 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/DELW72393626.
Die Geheimnisse der Harmonie, Chapter 6 "Leipziger Allerlei": Gut gegessen und getrunken
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3407e059716ec9e1580a186b7129c57da5db286176b4c1e9d520383602e3b8d6. 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/DELW72393627.
Die Geheimnisse der Harmonie, Chapter 3 "Auf der Himmelsburg": Nachwuchs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903376b3653697d15a8e0c147f3ab0525233e3555415ffc7957ce5eb339d4c7f. 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/DELW72393613.
Die Geheimnisse der Harmonie, Chapter 6 "Leipziger Allerlei": Fürstliche Gastpiele
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b1ffff9e6b3cfaa1b86a3d044ac93949c2966096639269ede4d08c5688008a. 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/DELW72393628.
Die Geheimnisse der Harmonie, Chapter 6 "Leipziger Allerlei": Matthäus-Passion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82ade1cd99b389e7005e171478c06e4a5f69c929823f302296fb66f52e7154d. 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/DELW72393630.