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 0xb09495e7c8fbd9b7a405e83c3f255377aaa6f8d2bd4b4976f4e8d624fed7ef4b. 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/73543932-c213-41dd-b0b3-bc9c70e5f135.json and https://artists.proofprofile.net/proofs/artist/73543932-c213-41dd-b0b3-bc9c70e5f135.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Christopher Schmitz: Violin Concerto & Symphony No. 1
Symphony No. 1 "Land of the Free": I. Threads of Resilience
Symphony No. 1 "Land of the Free": II. Shadow Empire
Symphony No. 1 "Land of the Free": III. Viral Veil
Symphony No. 1 "Land of the Free": IV. Sins of Inaction
Symphony No. 1 "Land of the Free": V. Whispered Prayers
The Oxford Book of Choral Music by Black Composers
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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 0x5a19d0f19f3aef2d746892d810963afea9b7e1065dde847552fa60eb336cf12c. 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/6khaH133bl8uNcYUBRutS3.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/6khaH133bl8uNcYUBRutS3.
Walk softly (from 'Four Little Foxes') - SATB
Step softly (from 'Four Little Foxes') - SATB
Across the Stars (Love Theme from "Star Wars: Attack of the Clones")
Star Wars: Angriff der Klonkrieger (Original Film-Soundtrack)
{"copyright_id":"0xbb10d68e63941ae3e443964564220a73bcbae3996e47d0cb792f2989e7bd6a42","isrc":"USWD11785324","name":"Across the Stars (Love Theme from \"Star Wars: Attack of the Clones\")","registered_at":"2026-06-04T10:16:17Z","spotify_id":"1cNf5WAYWuQwGoJyfsHcEF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb10d68e63941ae3e443964564220a73bcbae3996e47d0cb792f2989e7bd6a42. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1cNf5WAYWuQwGoJyfsHcEF.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/1cNf5WAYWuQwGoJyfsHcEF.
Le rossignol (The Nightingale): Scene 1 (The Forest at Dawn): Nightingale's Aria
Stravinsky: The Rite of Spring - The Nightingale
{"copyright_id":"0xc9c4d1c6d081f17a65369fa4c922e4215c7e50b3d147e6083c417bcd6ef9ed3b","isrc":"HKI190504315","name":"Le rossignol (The Nightingale): Scene 1 (The Forest at Dawn): Nightingale's Aria","registered_at":"2026-06-24T15:56:54Z","spotify_id":"166o6GxCb2szezkCEWFPvZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c4d1c6d081f17a65369fa4c922e4215c7e50b3d147e6083c417bcd6ef9ed3b. 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/166o6GxCb2szezkCEWFPvZ.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/166o6GxCb2szezkCEWFPvZ.
{"copyright_id":"0x0ac371834a1dc3ba2a34437101db5ded5436d8894353c23ee8a6baaa79f6bf04","isrc":"GBF077630611","name":"Adeste Fideles","registered_at":"2026-06-24T09:57:40Z","spotify_id":"4VfApJw7e8hhjLGLNRGhO7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac371834a1dc3ba2a34437101db5ded5436d8894353c23ee8a6baaa79f6bf04. 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/4VfApJw7e8hhjLGLNRGhO7.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/4VfApJw7e8hhjLGLNRGhO7.
Orchestra Sinfonica di Milano Giuseppe Verdi
Requiem, Op. 5 (Grande Messe des Morts): 9. Sanctus
Lim Fantasy of Companionship for Piano and Orchestra, Act 1: Jungle Song
Lim Fantasy of Companionship for Piano and Orchestra
Lim Fantasy of Companionship for Piano and Orchestra, Act 1: ALAN Song
Orchestra of the Royal Opera House, Covent Garden
{"copyright_id":"0xc3214dd9b019c48236b22d63bbaeea3e0d5a688185dc6fb9dee46b856938c25e","isrc":"GBAYC0301566","name":"Turandot: Nessun dorma!","registered_at":"2026-06-25T17:23:02Z","spotify_id":"5jpj4KEopXoPEUOQvdOrXF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3214dd9b019c48236b22d63bbaeea3e0d5a688185dc6fb9dee46b856938c25e. 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/5jpj4KEopXoPEUOQvdOrXF.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/5jpj4KEopXoPEUOQvdOrXF.
{"copyright_id":"0x13955803b145d2ca9048c8f4de6dd01242785dcf59d7f26f4ed109b05dc8b62f","isrc":"GBBBB0014201","name":"Norma / Act 1: Casta Diva","registered_at":"2026-06-25T16:56:10Z","spotify_id":"4StHBIMtoqrAcimFELnSzY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13955803b145d2ca9048c8f4de6dd01242785dcf59d7f26f4ed109b05dc8b62f. 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/4StHBIMtoqrAcimFELnSzY.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/4StHBIMtoqrAcimFELnSzY.
Les 100 Plus Beaux Airs de Roberto Alagna
{"copyright_id":"0xc3214dd9b019c48236b22d63bbaeea3e0d5a688185dc6fb9dee46b856938c25e","isrc":"GBAYC0301566","name":"Turandot / Act 3: Nessun dorma!","registered_at":"2026-06-25T17:23:02Z","spotify_id":"6Fst2vpnJLYc1dLAOXj3Vs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3214dd9b019c48236b22d63bbaeea3e0d5a688185dc6fb9dee46b856938c25e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Fst2vpnJLYc1dLAOXj3Vs.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/6Fst2vpnJLYc1dLAOXj3Vs.