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 0x0d502b7387ca111097c10597b6c94001f79a3d9f61db12fa3e04008f48df1960. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1430c46-e892-4850-a7a5-c11016d22fc3.json and https://artists.proofprofile.net/proofs/artist/e1430c46-e892-4850-a7a5-c11016d22fc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music For Ballet Class - Well Known Melodies
(Warm Up) Aura Lee, Early One Morning, All Through The Night
{"copyright_id":"0xd7b5745342bde23eae4734c91a9f41b51c8386cd84320c452908ff8ee57cb0c6","isrc":"QZX882312125","name":"(Warm Up) Aura Lee, Early One Morning, All Through The Night","registered_at":"2026-06-27T06:32:54Z","spotify_id":"4TdL8XhRLIgHO4jo9vZzaF","type":"track"}
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 0xd7b5745342bde23eae4734c91a9f41b51c8386cd84320c452908ff8ee57cb0c6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4TdL8XhRLIgHO4jo9vZzaF.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/4TdL8XhRLIgHO4jo9vZzaF.
(Plié 1) The Swan from The Carnival Of The Animals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075d6b08e7940c0876d23547b3667816cb688075f37853959292b7364c4e4aec. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/18sfRzr7ZG4D33n9vABcJV.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/18sfRzr7ZG4D33n9vABcJV.
{"copyright_id":"0x903ed8fa0ebadf892ffeac43f52b7014ba05d508e059e0d3891df1cd064e7812","isrc":"QZX882312127","name":"(Plié 2) Symphony No. 5, 2nd movement","registered_at":"2026-06-27T09:22:44Z","spotify_id":"5E70diiyLTVSG85vg05tFZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903ed8fa0ebadf892ffeac43f52b7014ba05d508e059e0d3891df1cd064e7812. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5E70diiyLTVSG85vg05tFZ.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/5E70diiyLTVSG85vg05tFZ.
{"copyright_id":"0x45c3d2cd7379ea9f379751b64cc49c5404f2dacb46a542d27a4954ddf8cbd535","isrc":"QZX882312128","name":"(Tendu 1) Toreador Song, from Carmen","registered_at":"2026-06-23T09:26:29Z","spotify_id":"1DLSK7ztYTIAtKUEnnANy0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c3d2cd7379ea9f379751b64cc49c5404f2dacb46a542d27a4954ddf8cbd535. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1DLSK7ztYTIAtKUEnnANy0.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/1DLSK7ztYTIAtKUEnnANy0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5a21d4bd2500ac2b952fdc50a0a43ab7252755db91751030b1c53cc039a437. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Pmb7DLim5DOTBT3iq4hka.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/5Pmb7DLim5DOTBT3iq4hka.
(Tendu 3) Dance of the Hours from La Gioconda
{"copyright_id":"0xb0baf897c8a34d34f3da2aad9714d84b05dd54350e7ebf5ef066bda2d5ca096f","isrc":"QZX882312130","name":"(Tendu 3) Dance of the Hours from La Gioconda","registered_at":"2026-06-25T23:48:51Z","spotify_id":"4PhnhAbC77psuvgbXjwTH5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0baf897c8a34d34f3da2aad9714d84b05dd54350e7ebf5ef066bda2d5ca096f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4PhnhAbC77psuvgbXjwTH5.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/4PhnhAbC77psuvgbXjwTH5.
(Jété 1) Golliwog's Cakewalk from Children's Corner L.113
{"copyright_id":"0xc9c7ec96d6d5b8e874203a7c2011214c52bee407019026a5c52d4685503200c9","isrc":"QZX882312131","name":"(Jété 1) Golliwog's Cakewalk from Children's Corner L.113","registered_at":"2026-06-25T23:47:50Z","spotify_id":"1ZQaeNoDEdLQthhLZXjqGT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c7ec96d6d5b8e874203a7c2011214c52bee407019026a5c52d4685503200c9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ZQaeNoDEdLQthhLZXjqGT.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/1ZQaeNoDEdLQthhLZXjqGT.
(Jété 2) Rondo Alla Ingharese Quasi Un Capriccio, Opus 129
(Rond De Jambe and Port De Bras 1) Torna A Surriento
{"copyright_id":"0x2339580356c819bf69fdac04e77dc5e35e9898d6e5adb32a852bbab175fb6dfe","isrc":"QZX882312133","name":"(Rond De Jambe and Port De Bras 1) Torna A Surriento","registered_at":"2026-06-26T03:10:19Z","spotify_id":"3yu6MsnW8l2VfNbgXxQBAS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2339580356c819bf69fdac04e77dc5e35e9898d6e5adb32a852bbab175fb6dfe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3yu6MsnW8l2VfNbgXxQBAS.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/3yu6MsnW8l2VfNbgXxQBAS.
(Rond De Jambe and Port De Bras 2) Londonderry Air
(Frappé 2) The Stars And Stripes Forever
(Petit Battements) Modern Major-General's Song from the Pirates of Penzance
(Rond De Jambe En L'aire) Poor Wandering One from The Pirates Of Penzance
(Adage 1) Gliding Dance of the Maidens, from Prince Igor
(Grand Battement 1) March Militaire, from Thee Marches Militaires , Opus 51
{"copyright_id":"0xfedb645055888d53fcb1fcf281f9dc48934742c7b6895d18e9b40bfe753aeb70","isrc":"QZX882312143","name":"(Grand Battement 1) March Militaire, from Thee Marches Militaires , Opus 51","registered_at":"2026-06-27T06:32:24Z","spotify_id":"4cStNsM7tsVvw5H0920LBf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedb645055888d53fcb1fcf281f9dc48934742c7b6895d18e9b40bfe753aeb70. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4cStNsM7tsVvw5H0920LBf.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/4cStNsM7tsVvw5H0920LBf.
(Grand Battement 2) "Military" Polonaise , Opus 40, No.1
(Centre Tendu 1) When the Saints Go Marching In
(Port De Bras 1) Sarabande in E Minor, Opus 5, No. 8
(Port De Bras 2) Peer Gynt Suite No. 1, Opus 46, Movement 1
(Centre Adage 1) Consolation, Opus 30, No.3 from Songs Without Words
(Centre Adage 2) Romance, Opus 44. No. 1
(Balancé 2) Waltz in C# Minor, Opus 64, No. 2
(Coda 2) Carmen Suite #1, No. 5 "Les Toreadors"
(Petit Allegro 1) Symphony No.7, Opus 92, Mvt.4,
(Petit Allegro 3, short) Serenade Badine, IGM 7 , No.2
(Petit Allegro 3, long) Serenade Badine, IGM 7 , No.2
(Medium Allegro 1) We Sail the Ocean Blue from H.M.S. Pinafore
(Grand Allegro 2) Grande Valse Brillante in Eb Major, Op18
(Reverence - 16 counts) Prince of Denmark's March