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 0x0c72c7542c8278ba2f381ba649ef4783f796981f475d0abc9782740efd1c5603. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/750fd5f8-b903-468b-899a-746d34b59e4d.json and https://artists.proofprofile.net/proofs/artist/750fd5f8-b903-468b-899a-746d34b59e4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xc4570fdda368922af01e22891a5c5bb3092b3d6901b36c978554104a53bba55e. 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/USRDG0312528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df32b4aa3c0a59bb01b2e607a165d90b3b890d2a6618865e8d4ef26610909d. 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/USRDG0312523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42337f41fbe50966fecc7a37bac46daa06fc71e8725c5a4d57534bc1b853a4ab. 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/USRDG0216752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c0024f745127e397467f611ad9873b9e7302a3c011320c7dc8b20041ed7810. 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/USRDG1012119.
Musikalische Kostbarkeiten aus Deutschland 1
Lieder kennen keine Grenzen - ihre aktuellen Hits
Musikalische Kostbarkeiten aus Deutschland 2
Guten Abend, gut Nacht (Wiegenlied) aus "Lieder" op. 49/4 / Lullaby / Berceuse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afe4096704a53e5c336925b82342842e9b6706f2357a0be1225215362e5ca7c. 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/USRDG0216512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafac6279370c737c34856f0eecf2b58e3c19b782c56c83e1b9263eb0aea71186. 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/DEN120404885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f9344cfcec8d185220c77c1aae0b57d4cb712785924456037a479a7eb8ea08. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN120404890.
Ich Bete An Die Macht Der Liebe/Kolj Slawjen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc994d1eb0d902a8c4f4db353c6d7feded1fcd41fa3abffdba757a48b1fe1f470. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN120404892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3757cfc21fee73ab03f7684d7def721699600833ed0f329215a7d3b22a125a60. 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/DEN120404893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2b67935e82ef318283a8c49797b7ff8edffbe75e277d2fc872c6888a4a368d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN120404899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0485948e64d3b5ced6d676fc23092da2ae6551d2ff9149ab2dd1f02307c581e3. 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/DEN120404901.
Eine musikalische Reise durch die Heimat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3906c0d4126d50c885e6aefb25b9144b771732794c71f923e90361d329cc53. 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/ATT259818830.
Preisend mit viel schönen Reden - Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebca6fe228053444bbf3cff94818615783b8c5bcc8dda0ccdf7833c60959d50. 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/ATT259818860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f98e79cb7d6c53539e7d8b1c662710ad280ccc70e2b2116dab58fe63f5a9d58. 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/ATT259818890.
Es steht eine Mühle im Schwarzwälder Tal - Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e0b685e0d7b2e24e09b4b634b5789c8918219c4ab8bebf6fa4ec9158d2e944. 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/ATT259818900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae82fc7603b2ee5155f624b98a46c7644ab72d558397ce72fdb472257becb692. 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/DEA610100004.
Schäfers Sonntagslied - Das ist der Tag des Herrn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b3a64d26a626436d6ebfa83258a2ef9e4ad891b7582aa2c55d6cf795e83224. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEA610100020.
Im schönsten Wiesengrunde - Das stille Tal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231cf1a9082e8a6e5deb2cabd1d7acf2695bf519801893e117e0a694982bff9f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA610100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8692a74907a2200b48a47d20a0699360cd5a83d82e745f746034577797d750. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEA610100022.
Wer hat dich, du schöner Wald, aufgebaut so hoch da droben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1138b3b6486e216a6667cfc121dba4015bb670ecb8b3ceb95ca19297b3755b43. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEA610100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e94d08353dddc5917d6947a9dc3c7f93b1e11747eb7ba240fd8ab3dfa42660. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEA610100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbea447079666ac6ab36683d00e99e5879b77f686e4f772b21ed89538407314c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:59:48Z), 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/DEA610100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8551184639571398d362d33d22a4ae2826f5140c82eac67395d53211489fbd1f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA610100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc936a4ea1f4fd49b0bbe142799389d69342c406623891e4311cad397e575167b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA610100030.
Waldandacht - Frühmorgens, wenn die Hähne kräh'n
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0026d2190fc4263b979768adb8ece52c8f48dca09f3b8e8fb1c23ef9c5536aa3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA610100032.
Die Himmel rühmen der ewigen Ehre - Die Ehre Gottes in der Natur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1733029a1839dc6e0551fe40246b45ec4b650a29e993447acfea2410fd3e91f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA610100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab137d7254aac562dd0ffef51766ae903dbdabe1480ae85c8f9df99281a7451e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA610100043.
Ave Maria (Heut sind so viele ganz allein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a11325be6ca95965583997fe9af807f76e1db6265bcaec83754bd3fd5fe83b. 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/DEC610701260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00c7a8e54bcb7c0c87d27ed1a232ef4ff9c026b85ec7246fe1503642de3520e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEA349600952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f455bd474e25976658c540748a7bad69a4512e8322722e41beac84175fee083. 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/DEC610701261.