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 0x7c9fb30911dfc0cd94b7e7b24dfb2230b9cf5833f819b2e626ff783f9db0bcd1. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2daea82-0a13-4a28-ae74-145762daf613.json and https://artists.proofprofile.net/proofs/artist/a2daea82-0a13-4a28-ae74-145762daf613.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Der Tod des Blumenmädchens [Die Kriminalistinnen, Fall 1 (Ungekürzt)]
Kapitel 1 - Der Tod des Blumenmädchens - Die Kriminalistinnen, Fall 1
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 0x8534971a626ddcc8a851925cfbac71906320f70b5e7933b5ef041e9218098362. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/DEUD92526551.
Kapitel 3 - Der Tod des Blumenmädchens - Die Kriminalistinnen, Fall 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18488bbd5feb7f295bb40905213bd80e844c726fe00b64d3f1098b7e22af8649. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DEUD92526553.
Die Kriminalistinnen. Der Tod des Blumenmädchens Fall 1 (Kriminalroman)
Die Kriminalistinnen. Acht Schüsse im Schnee Fall 2
Acht Schüsse im Schnee [Die Kriminalistinnen, Fall 2 (Ungekürzt)]
Die Kriminalistinnen-Box (Band 1-2) - Deutschlands erste Kriminalpolizistinnen [Die Kriminalistinnen (Ungekürzt)]