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 0xb09915d7cd25a2b01e05f95f9dafaebaab5f4a8632463fadd8556707835d5ec1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65890609-ebf1-4a2a-ba47-10a9ad3ce914.json and https://artists.proofprofile.net/proofs/artist/65890609-ebf1-4a2a-ba47-10a9ad3ce914.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Berte, H.: Dreimaderlhaus (Das) [Operetta]
La vie parisienne (Parisian Life): Overture
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 0x4bc7f6eb8ff126e197fb48981e1bf60cea002b8f90b088d937d24809fd4c0fa2. 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/USB8U1012596.
Chants du soir: Au bord de la mer (arr. H. Geese)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4b933c9cb9013bd07f5d39bc78d0ade7efd47923236385bf233982262fa1fc. 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/USB8U1012599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e71b11000a6149faa210437a3fd02d81e2801fc0e8c8972200af38d4e66947. 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/DEB261501801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f745e209b6d00a5e0cd3a8b0e222ee939dfa947924140750fccd072024184e. 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/DEB200628501.
Frau Luna 1. Akt: II. 2. 1. Duett "Es ist was Wunderbares ums Genie"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1916f5cccf41e97c838d5a7b21dd5fa1ab9a176d785949cd94fbe278c9fa125. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEB200628502.
Frau Luna 2. Akt: III. 3. Auftritt der Luna "Lasst den Kopf nicht hängen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe416ca26345903d81fcbd3f41d28fbe8036cf00d6e488c0cb0721b80f074be3e. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/DEB200628523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb30a0a61472f94c07300b4d181876c330ff4bd769158d5fa19ca08382e328b. 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/DEB200628503.
Frau Luna 1. Akt: IV. 4. Glühwürmchen-Idyll (aus Lysistrata)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218c38fa16e46904bec98639180ecae783ff6a25f32dbb5121807473636a665c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEB200628504.
Frau Luna 2. Akt: V. 5. Duett "Wenn die Sonne schlafen geht"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332fbd8f4ffcbaeea410344a48089082d217bbe84d2d059751a46d35e0d078fd. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEB200628525.
Frau Luna 1. Akt: VI. 6. Lied "Oh Theophil"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9be01280907934b0d637e4a165f41c751e456ee4c67ce294a37aacb0934e6ac. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEB200628506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5f1f116f474f8888eda3497a77c13263f4966767f260d745239bf7c7f0c4b7. 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/DEB200628507.
Frau Luna 1. Akt: VIII. 8. Lied "Schlösser, die im Monde liegen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637f811b29e6f16f6f299e5b3a49e5fd00f2c82aa918c04da632bbe76078dd12. 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/DEB200628508.
Frau Luna 1. Akt: XI. 11. Chor der Mondelfen und Auftrittslied des Theophil "Schnell, putzet fein rings das Gestein"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c5000aa26efb42144df6184e751f829310188c4a0c8b64ac454890e92d60be. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEB200628511.
Frau Luna 1. Akt: XIII. 13. Duett "Schenk mir doch ein kleines bisschen Liebe"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bb815f7b077e601caffb55def308a5e34a9f8796163d85728afc1f5ad03696. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEB200628513.
Frau Luna 1. Akt: XIV. 14. Ensemble im Espress-Ballon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b9c8cd8d84b86eecbf6d475ff90d1b34e72a74d451238741bfbd31a2eda13c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEB200628514.
Frau Luna 2. Akt: XIV. 14. Finale "Das macht die Berliner Luft"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55199232778a834089eae2768b2a795353ee208f3c68c2eefa6156432b38bf94. 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/DEB200628534.
Frau Luna 1. Akt: XVI. 16. Musikalische Szene "Schutzmannmarsch"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c23f76bda0de989c554396ed59e0d65dce53e6d584bb263077ba946fdf39b2. 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/DEB200628516.
Frau Luna 1. Akt: XX. 20. Sextett mit Ensemble "Das macht die Berliner Luft"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6629b608e72d3fd0767be1d252080d12c75c6cf7b6c3bd4298644766f7e47b. 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/DEB200628520.
Albinoni, T.G.: Concertos, Opp. 5, 7 and 9