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 0x5c42b2bb1991bdf297d0c6cb7a50a47d8dccc7e37ee479d65571646600e6320c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86e15d0a-5484-4856-8a8d-a22a94c84b37.json and https://artists.proofprofile.net/proofs/artist/86e15d0a-5484-4856-8a8d-a22a94c84b37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Frau Luna 1. Akt: XI. 11. Chor der Mondelfen und Auftrittslied des Theophil "Schnell, putzet fein rings das Gestein"
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 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 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.
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.