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 0x110263924f50a032c4fbe0c4ff4e7260c2dedec579def0d0aad3603bf3cbbf25. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82f82f70-6572-4781-b975-c8b18db0dfe1.json and https://artists.proofprofile.net/proofs/artist/82f82f70-6572-4781-b975-c8b18db0dfe1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x746068ffbb734a65eff0e51555a18173c77dbfd3b1146e5ca97353e29daf0da3","isrc":"USAT21704623","name":"Rewrite The Stars","registered_at":"2026-06-01T04:41:03Z","spotify_id":"630sXRhIcfwr2e4RdNtjKN","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 0x746068ffbb734a65eff0e51555a18173c77dbfd3b1146e5ca97353e29daf0da3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/630sXRhIcfwr2e4RdNtjKN.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/630sXRhIcfwr2e4RdNtjKN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148c79748bd97348b9599927d5f2e9e1b922a05cf379529a4d6900b527b83b46. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6YoYLN155MLavQcl3bHmvY.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/6YoYLN155MLavQcl3bHmvY.
Hairspray (Soundtrack To The Motion Picture)
{"copyright_id":"0xfce406c55202b8f45482d2d6efed68df1f2db1408e2f2c13b6878d7154fa9ac9","isrc":"USNLR0700062","name":"You Can't Stop The Beat","registered_at":"2026-06-01T14:06:06Z","spotify_id":"7goE6wDBvkZoeWrFm0EdCg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce406c55202b8f45482d2d6efed68df1f2db1408e2f2c13b6878d7154fa9ac9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7goE6wDBvkZoeWrFm0EdCg.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/7goE6wDBvkZoeWrFm0EdCg.
High School Musical 2 Original Soundtrack
{"copyright_id":"0x8774ad7ab7219c118f78f2cf68746de122b829803b2e398a18a1e8ffffcfedf7","isrc":"USWD10732098","name":"Gotta Go My Own Way","registered_at":"2026-06-01T13:21:27Z","spotify_id":"0moS6k1E4YNbkG4Dxet8ZH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8774ad7ab7219c118f78f2cf68746de122b829803b2e398a18a1e8ffffcfedf7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0moS6k1E4YNbkG4Dxet8ZH.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/0moS6k1E4YNbkG4Dxet8ZH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ef9c7ece0950852eaaf8d77c6461f5f08b94814e5240d885cf35ffeda415ab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/38oHr9Ujk0tSBa0W71vVGJ.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/38oHr9Ujk0tSBa0W71vVGJ.
Hairspray (Original Motion Picture Soundtrack) [Collector's Edition]
{"copyright_id":"0xfce406c55202b8f45482d2d6efed68df1f2db1408e2f2c13b6878d7154fa9ac9","isrc":"USNLR0700062","name":"You Can't Stop The Beat","registered_at":"2026-06-01T14:06:04Z","spotify_id":"3pMsqOoZTtzUiZXmDVtrCD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce406c55202b8f45482d2d6efed68df1f2db1408e2f2c13b6878d7154fa9ac9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3pMsqOoZTtzUiZXmDVtrCD.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/3pMsqOoZTtzUiZXmDVtrCD.
Rewrite the Stars (From "The Greatest Showman")
{"copyright_id":"0x746068ffbb734a65eff0e51555a18173c77dbfd3b1146e5ca97353e29daf0da3","isrc":"USAT21704623","name":"Rewrite the Stars (From \"The Greatest Showman\")","registered_at":"2026-06-01T04:41:03Z","spotify_id":"2Dxfw4NZOQ8HEg3kOZ4XuW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746068ffbb734a65eff0e51555a18173c77dbfd3b1146e5ca97353e29daf0da3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Dxfw4NZOQ8HEg3kOZ4XuW.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/2Dxfw4NZOQ8HEg3kOZ4XuW.
High School Musical 3: Nos Années Lycée (Bande Originale du Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3bafb13c0455d5be502ff566ad35f8ffa1633df00c8028113849c330c167de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2NSuyyHwTVOHX475sopJ30.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/2NSuyyHwTVOHX475sopJ30.
{"copyright_id":"0xee91f414753c689ed3df0bc769355235d72d7aeb8938c84b97abad4fb983f177","isrc":"USWD10834891","name":"Can I Have This Dance","registered_at":"2026-06-05T08:26:21Z","spotify_id":"1SNgyumKA0trB8ceWRAETN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee91f414753c689ed3df0bc769355235d72d7aeb8938c84b97abad4fb983f177. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1SNgyumKA0trB8ceWRAETN.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/1SNgyumKA0trB8ceWRAETN.
{"copyright_id":"0x9cd979d36e17cf1bd14dd7e82b58cb43fef9f9b4af6a4f75295e81f9c7ced70b","isrc":"USWD10834892","name":"Just Wanna Be With You","registered_at":"2026-06-06T03:48:12Z","spotify_id":"0B8ewA0pRoy5bReNsRU9yf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd979d36e17cf1bd14dd7e82b58cb43fef9f9b4af6a4f75295e81f9c7ced70b. 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/0B8ewA0pRoy5bReNsRU9yf.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/0B8ewA0pRoy5bReNsRU9yf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148c79748bd97348b9599927d5f2e9e1b922a05cf379529a4d6900b527b83b46. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2oPCoKPdN26RviPAwJ6RFr.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/2oPCoKPdN26RviPAwJ6RFr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61691433ddca282d5ff7f179b79cbcaf68735726ad672b8cab30586250d0637c. 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/3vrVVyzbBqosAOfLCw0fyB.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/3vrVVyzbBqosAOfLCw0fyB.
{"copyright_id":"0x7694af2f26945e20d3c9b0bbc9dea2a06935dd459d1ca0901cd1834981059b9c","isrc":"USWD10834895","name":"Senior Year Spring Musical","registered_at":"2026-06-09T04:36:05Z","spotify_id":"24JVnmuEHMGoQN6ew1Y9tu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7694af2f26945e20d3c9b0bbc9dea2a06935dd459d1ca0901cd1834981059b9c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/24JVnmuEHMGoQN6ew1Y9tu.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/24JVnmuEHMGoQN6ew1Y9tu.
{"copyright_id":"0x5c3bafb13c0455d5be502ff566ad35f8ffa1633df00c8028113849c330c167de","isrc":"USWD10834890","name":"Right Here, Right Now","registered_at":"2026-06-06T10:12:15Z","spotify_id":"6VyfUeByriK5w5Q9DAyUij","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3bafb13c0455d5be502ff566ad35f8ffa1633df00c8028113849c330c167de. 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/6VyfUeByriK5w5Q9DAyUij.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/6VyfUeByriK5w5Q9DAyUij.
{"copyright_id":"0xb4ef9c7ece0950852eaaf8d77c6461f5f08b94814e5240d885cf35ffeda415ab","isrc":"USWD10731999","name":"What Time Is It","registered_at":"2026-06-01T23:01:29Z","spotify_id":"7Ly2tIoUAsHnr4XaDJ8h8l","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ef9c7ece0950852eaaf8d77c6461f5f08b94814e5240d885cf35ffeda415ab. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Ly2tIoUAsHnr4XaDJ8h8l.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/7Ly2tIoUAsHnr4XaDJ8h8l.
What Time Is It - From "High School Musical 2"/Soundtrack Version
{"copyright_id":"0xb4ef9c7ece0950852eaaf8d77c6461f5f08b94814e5240d885cf35ffeda415ab","isrc":"USWD10731999","name":"What Time Is It - From \"High School Musical 2\"/Soundtrack Version","registered_at":"2026-06-01T23:01:29Z","spotify_id":"6nlBs0WW2CBrroYcJ7EcAu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ef9c7ece0950852eaaf8d77c6461f5f08b94814e5240d885cf35ffeda415ab. 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/6nlBs0WW2CBrroYcJ7EcAu.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/6nlBs0WW2CBrroYcJ7EcAu.
Gotta Go My Own Way - From "High School Musical 2"/Soundtrack Version
{"copyright_id":"0x8774ad7ab7219c118f78f2cf68746de122b829803b2e398a18a1e8ffffcfedf7","isrc":"USWD10732098","name":"Gotta Go My Own Way - From \"High School Musical 2\"/Soundtrack Version","registered_at":"2026-06-01T13:21:27Z","spotify_id":"4u2ZDOCNaAHhT1lK4Glfj4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8774ad7ab7219c118f78f2cf68746de122b829803b2e398a18a1e8ffffcfedf7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4u2ZDOCNaAHhT1lK4Glfj4.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/4u2ZDOCNaAHhT1lK4Glfj4.