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 0x488d543c92aa4f09363d569dde0c70309e3096be8cd402736bc230e7886fb527. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ffb20b5-cfcb-4f19-9a8c-0efb7d7fcd2d.json and https://artists.proofprofile.net/proofs/artist/7ffb20b5-cfcb-4f19-9a8c-0efb7d7fcd2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 6, Op. 79: I. Adagio sostenuto
Symphony No. 6, Op. 79: III. Allegro molto
Sinfonietta No. 1, Op. 41: I. Allegro risoluto
Sinfonietta No. 1, Op. 41: III. Allegretto
Symphony No 3 in C Major, Op. 43 "The Divine Poem": I. Introduction
Symphony No 3 in C Major, Op. 43 "The Divine Poem": II. Luttes
Symphony No 3 in C Major, Op. 43 "The Divine Poem": III. Voluptés
Symphony No 3 in C Major, Op. 43 "The Divine Poem": IV. Jeu divin
Symphony No. 2 in C Major, Op. 61: I. Sostenuto assai - Allegro, ma non troppo
Symphony No. 2 in C Major, Op. 61: II. Scherzo. Allegro vivace
Symphony No. 2 in C Major, Op. 61: III. Adagio espressivo
Symphony No. 2 in C Major, Op. 61: IV. Allegro molto vivace
Symphony No. 4 in D Minor, Op. 120: I. Moderatamente lento - Vivace
Symphony No. 4 in D Minor, Op. 120: II. Romanza. Moderatamente lento
Symphony No. 4 in D Minor, Op. 120: III. Scherzo. Vivace - Trio
Symphony No. 4 in D Minor, Op. 120: IV. Lento - Vivace - Più presto
Scriabin: Symphony No. 3 in C Minor, Op. 43 (Digitally Remastered)
Symphony No. 3 in C Minor, Op. 43: Introduction
Symphony No. 3 in C Minor, Op. 43: I. Luttes (Struggles)
Symphony No. 3 in C Minor, Op. 43: II. Voluptés (Delights)
Symphony No. 3 in C Minor, Op. 43: III. Jeu divin (Divine Play)
A NRK Tribute to Erling Blöndal Bengtsson
Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
Cello Concerto in E Minor, Op. 85: II. Lento - Allegro molto - Adagio
Trio in A Minor, Op. 114: III. Andantino grazioso
Cello Concerto in E Minor, Op. 85: III. Allegro - Moderato - Allegro ma non troppo
Sonata for Cello and Piano in A Minor, Op. 36: I. Allegro agitato
Piano Trio No. 2 in E Minor, Op. 67: I. Andante
Sonata for Cello and Piano in A Minor, Op. 36: II. Andante molto tranquillo
Piano Trio No. 2 in E Minor, Op. 67: II. Allegro con brio
Sonata for Cello and Piano in A Minor, Op. 36: III. Allegro - Allegro molto e marcato
Piano Trio No. 2 in E Minor, Op. 67: III. Largo
Piano Trio No. 2 in E Minor, Op. 67: IV. Allegretto
Cello Concerto, Op. 29: I. Preludio metamorfico
Cello Concerto, Op. 29: IV. Finale: Allegro energico
Symphony No. 2, "For the New Millennium": First Movement
Moscow Radio Tchaikovsky Symphony Orchestra
Symphony No. 2, "For the New Millennium": Second Movement
Symphony No. 2, "For the New Millennium": Third Movement
Symphony No. 2, "For the New Millennium": Fourth Movement
Liebesträume Nr. 3 in A-Flat Major, Op. 62, G541
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3678016bbf74259412714f05df8e725d416fe1df1f0c8ec8344b5e53007f53. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4SGW3c4tgb3HLIQmd0CrsB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4SGW3c4tgb3HLIQmd0CrsB.
{"copyright_id":"0x71085fb2f6f7bc360db322f8298960597ffa6e7bc582252ba012ded8cc7150be","isrc":"ITZ049700071","name":"Panis Angelicus, FW 61","registered_at":"2026-06-22T23:23:21Z","spotify_id":"3rrq9NuVZVtvULlp7UrVZb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71085fb2f6f7bc360db322f8298960597ffa6e7bc582252ba012ded8cc7150be. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3rrq9NuVZVtvULlp7UrVZb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3rrq9NuVZVtvULlp7UrVZb.
Piano Concerto No. 1 in B flat minor Op. 23: I. Allegro non troppo e molto maestoso
Tchaikovsky: Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso (Excerpt)
Tchaikovsky: Piano Concerto No. 1 in B-Flat Minor, Op. 23: II. Andantino semplice - Prestissimo
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049f27b64ae852bd6ed57de0166ca130c323e8fcc4b810dbb390ceb3e0e587a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6ubRlOPgs1Lp1mVoXJlMFH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6ubRlOPgs1Lp1mVoXJlMFH.
Tchaikovsky: Piano Concerto No. 1 in B-Flat Minor, Op. 23: III. Allegro con fuoco
{"copyright_id":"0x589ade3eb765cbe8d50db4452bcea21553321aab111668e869824c474ecbc0b7","isrc":"GBAYC9005732","name":"Tchaikovsky: Piano Concerto No. 1 in B-Flat Minor, Op. 23: III. Allegro con fuoco","registered_at":"2026-06-26T21:04:42Z","spotify_id":"54GFlbcI0hjtORQSS8xtCK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589ade3eb765cbe8d50db4452bcea21553321aab111668e869824c474ecbc0b7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/54GFlbcI0hjtORQSS8xtCK.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/54GFlbcI0hjtORQSS8xtCK.
Symphony No. 5 In C Minor, Op. 67 "Fate": II. Andante Con Moto
100 Most Relaxing Classical Music In The Universe
Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c1852b9e357e3e8aae432e640695bf5995d3cfab992f0206a3d7e4aaafdca4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/65fRWniOUkxft0FQMJ1EGo.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/65fRWniOUkxft0FQMJ1EGo.
Symphony No. 7 in A Major, Op. 92: I. Poco sostenuto - Vivace
Symphony No. 7 in A Major, Op. 92: II. Allegretto
10 Preludes, Op. 23: No. 1 in F-Sharp Minor
Swan Lake Suite, Op. 20: Scéne: Moderato
Symphony No. 2 in B-Flat Major, D. 125: I. Largo - Allegro vivace
Symphony No. 2 in B-Flat Major, D. 125: II. Andante
Symphony No. 2 in B-Flat Major, D. 125: III. Menuetto: Allegro vivace
Symphony No. 2 in B-Flat Major, D. 125: IV. Finale: Presto vivace
Harold in Italy, Symphony with Viola obbligato, Op. 16: I. Harold aux montagnes (Harold in the Mountains): Adagio
Berlioz: Symphonie Fantastique and Harold in Italy