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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de9919d69ecda8d46761e6c72d5030abd6aadf61c52337a46d11709de96786d. Chain 2 (Bitcoin): anchored in block 953895 (2026-06-16T05:46:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f2d2890-5d6c-4894-81ff-0d6c51a09cd0.json and https://artists.proofprofile.net/proofs/artist/0f2d2890-5d6c-4894-81ff-0d6c51a09cd0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Glazunov: Saxophone Quartet, Op. 109: I. Allegro
Glazunov: Saxophone Quartet, Op. 109: II. Canzon
Glazunov: Saxophone Quartet, Op. 109: II. Canzon (Variation 1)
Glazunov: Saxophone Quartet, Op. 109: II. Canzon (Variation 2)
Glazunov: Saxophone Quartet, Op. 109: II. Canzon (Variation 3)
Glazunov: Saxophone Quartet, Op. 109: II. Canzon (Variation 4)
Glazunov: Saxophone Quartet, Op. 109: II. Canzon (Variation 5)
Glazunov: Saxophone Quartet, Op. 109: III. Einale; Allegro moderato
Desenclos: Quatuor pour Saxophones: I. Allegro non troppo
Desenclos: Quatuor pour Saxophones: II. Andante
Desenclos: Quatuor pour Saxophones: III. Poco largo, ma rizoluto-Allegro Energico
Schmitt: Saxphone Quartet, Op. 102: I. Avec une sage decision
Schmitt: Saxphone Quartet, Op. 102: II. Vif
Schmitt: Saxphone Quartet, Op. 102: III. Assez lent
Schmitt: Saxphone Quartet, Op. 102: IV. Anime sans exces
Air on the G String [Arr. for Saxophones]
Saxophone Quartet Op.109: Ⅱ. Canzona variee：Andante
Saxophone Quartet Op.109: Ⅱ. Canzona variee：Variation Ⅰ：meme mouvement
Saxophone Quartet Op.109: Ⅱ. Canzona variee：Variation Ⅱ：con anima
Saxophone Quartet Op.109: Ⅱ. Canzona variee：Variation Ⅲ：a la Schumann, Grave
Variations on a Theme by Joseph Haydn, Op.56: Theme. Andante
Saxophone Quartet Op.109: Ⅱ. Canzona variee：Variation Ⅳ：a la Chopin, Allegretto
Variations on a Theme by Joseph Haydn, Op.56: Variation I. Poco più animato (Andante con moto)
Variations on a Theme by Joseph Haydn, Op.56: Variation II. Più vivace (Vivace)
Saxophone Quartet Op.109: Ⅱ. Canzona variee：Variation Ⅴ：Scherzo, Presto
Saxophone Quartet Op.109: Ⅲ. Finale：Allegro moderato
Variations on a Theme by Joseph Haydn, Op.56: Variation III. Con moto
Variations on a Theme by Joseph Haydn, Op.56: Variation IV. Andante con moto (Andante)
Quatuor pour Saxophones: Ⅰ. Allegro non troppo
Variations on a Theme by Joseph Haydn, Op.56: Variation V. Vivace (Poco presto)
Quatuor pour Saxophones: Ⅲ. Poco largo, ma risoluto-Allegro Energico
Variations on a Theme by Joseph Haydn, Op.56: Variation VI. Vivace
Variations on a Theme by Joseph Haydn, Op.56: Variation VII. Grazioso
Saxophone Quartet Op.102: Ⅰ. Avec une sage decision
Variations on a Theme by Joseph Haydn, Op.56: Variation VIII. Presto non troppo (Poco presto)
Variations on a Theme by Joseph Haydn, Op.56: Finale. Andante
Saxophone Quartet Op.102: Ⅳ. Anime sans exces
サクソフォン四重奏曲 Op.109: Ⅱ. Canzona variee：Andante
サクソフォン四重奏曲 Op.109: Ⅱ. Canzona variee: Variation Ⅰ：meme mouvement
サクソフォン四重奏曲 Op.109: Ⅱ. Canzona variee: Variation Ⅱ：con anima
サクソフォン四重奏曲 Op.109: Ⅱ. Canzona variee: Variation Ⅲ：a la Schumann, Grave
サクソフォン四重奏曲 Op.109: Ⅱ. Canzona variee: Variation Ⅳ：a la Chopin, Allegretto
ハイドンの主題による変奏曲 Op.56: Variation I. Poco più animato (Andante con moto)
ハイドンの主題による変奏曲 Op.56: Variation II. Più vivace (Vivace)
サクソフォン四重奏曲 Op.109: Ⅱ. Canzona variee: Variation Ⅴ：Scherzo, Presto
サクソフォン四重奏曲 Op.109: Ⅲ. Finale：Allegro moderato
ハイドンの主題による変奏曲 Op.56: Variation III. Con moto
ハイドンの主題による変奏曲 Op.56: Variation IV. Andante con moto (Andante)
ハイドンの主題による変奏曲 Op.56: Variation V. Vivace (Poco presto)
ハイドンの主題による変奏曲 Op.56: Variation VI. Vivace
サクソフォン四重奏曲: Ⅲ. Poco largo, ma risoluto-Allegro Energico
サクソフォン四重奏曲Op.102: Ⅰ. Avec une sage decision
ハイドンの主題による変奏曲 Op.56: Variation VII. Grazioso
ハイドンの主題による変奏曲 Op.56: Variation VIII. Presto non troppo (Poco presto)