1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d1868bb5e80adeea7145d1fd8f2c652fb1f15fa258bf1abf7a954e41284e72. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84fb394e-9457-45cf-af8e-af69fcdfbc7c.json and https://artists.proofprofile.net/proofs/artist/84fb394e-9457-45cf-af8e-af69fcdfbc7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 9, "The great" in C Major, D. 944 - Extract
Ecossaises, Op. 18, D. 145 & Op. 33, D. 783 - Extract
Symphony no.1 in D Major, D. 82 - Extract
Symphony No. 8 in B Minor "Unfinished", D. 759: II. Andante con moto - Extract
Rosamunde, Fürstin von Zypern, D. 797 - Extract
Piano quintette in A Major, "La truite", D. 667 - Extract
Sonata in A Minor "Arpeggione", D. 821 - Extract
Symphony No. 8 in B Minor "Unfinished", D. 759: I. Allegro moderato - Extract
Allez L'elan Béarnais - "Hymne Officiel De L'ebpo"
Agur Euskal Herria - Les Plus Belles Voix Du Pays Basque
Mon Chêne À Moi (D'après Non Geratzen Den Denbora)
Mon chêne à moi (D'après Non geratzen den denbora)
Aupa Pilota - XVIèmes Championnats du Monde de Pelote Basque
Entrez dans la fête (Compil officielle des fêtes)