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 0x206e1281218533c93dbcdc127831d1b40b72038bf13f38214ba7a9538d7eec6f. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00c9a622-2733-4544-b0b2-3347a915d08e.json and https://artists.proofprofile.net/proofs/artist/00c9a622-2733-4544-b0b2-3347a915d08e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Korngold: Die stumme Serenade (Recorded 1951)
J. Strauss II: Die Fledermaus (Mono Version)
Richard Strauss: Les grands opéras - La discothèque idéale de Diapason, Vol. 7
R. Strauss: Salome (Clemens Krauss: Complete Decca Recordings, Vol. 8)
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 0x26a207b41ccb4dcf331aa5f58f12389704793bb634def3673d99661eef83c309. 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/DEAT71208827.
Masterpieces of Operetta, Vol. 9: Oscar Straus "Der letzte Walzer" & Robert Stolz "Trauminsel"
Weill: Die Dreigroschenoper – Musical Highlights (Remastered 2017)
Im Reich der Operette, Vol. 9 (Favoriten - Raritäten - Entdeckungen)
Strauss, R.: Salome (Goltz, Patzak, Krauss) (1954)
Strauss: Ariadne auf Naxos (Mono Version)
Johann Strauss II: La chauve-souris (Les indispensables de Diapason)
Nestroy klassisch, Vol. 2 - Tannhäuser (Gesamtaufnahme)