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 0x9859bd4e439c6bb57adc55e4be21030fed8a1d0db60f920ff0a62a8000a6d926. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09fb4d97-9fea-4822-aece-1462d6c6f04a.json and https://artists.proofprofile.net/proofs/artist/09fb4d97-9fea-4822-aece-1462d6c6f04a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mein Lieb ist verschwiegen - und schön wie die Nacht. Die schönsten Liebesgedichte
Aus dem Leben eines Taugenichts (Ungekürzt)
und träumte von der alten Zeit (Von Eichendorffs versunkenen Gärten)
Zündend für ein ganzes Leben (Joseph von Eichendorffs Heidelberger Inspirationen)
Joseph von Eichendorff: Das Schloss Dürande (Eine Novelle. Ungekürzt gelesen.)
Joseph von Eichendorff: Die Hörbuch Box (Das Marmorbild, Schloss Dürande, Aus dem Leben eines Taugenichts, Lyrik)
Joseph von Eichendorff: Die Zauberei im Herbste (Eine märchenhafte Erzählung. Ungekürzt gelesen)
Aus dem Leben eines Taugenichts (Das Marmorbild - Das Schloss Dürande)
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 0x28c78f361711b7220d7fb7e743d4f1c1ee9522fa1b9e65c7313a57b8ab96bae4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEGF91914313.