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 0x667cef78436e0a55f35d9422615d5e0b28ee9d19344af65796e8c9be7ff8fa60. 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/7436adf0-9de1-47c5-9f1b-b1dc07e5fac6.json and https://artists.proofprofile.net/proofs/artist/7436adf0-9de1-47c5-9f1b-b1dc07e5fac6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xac7a098931c6bfd7ac3f9a573352b290816bed3c55dcc7aded274e74f5eb8449","isrc":"QZWFL2431940","name":"Bring Me To Life","registered_at":"2026-06-10T04:52:14Z","spotify_id":"1mY6dkywfOgxjrJD6WPH6T","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 0xac7a098931c6bfd7ac3f9a573352b290816bed3c55dcc7aded274e74f5eb8449. 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/1mY6dkywfOgxjrJD6WPH6T.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/1mY6dkywfOgxjrJD6WPH6T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bda749ebe2bf74f030d759ffca06403e2590b095accde17061c35dcbe1ad9cd. 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/48QpNRT6yvQHLWsUm67ykC.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/48QpNRT6yvQHLWsUm67ykC.
{"copyright_id":"0xc25eca004b8c932b6e57995734e5738904c057ad80dd6df335317fdac5852af3","isrc":"QZK6K2352430","name":"Porcelain - Nxghtshade Remix","registered_at":"2026-06-07T14:36:31Z","spotify_id":"3n2EfhI8SvZXnodI88qGZC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25eca004b8c932b6e57995734e5738904c057ad80dd6df335317fdac5852af3. 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/3n2EfhI8SvZXnodI88qGZC.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/3n2EfhI8SvZXnodI88qGZC.
{"copyright_id":"0xe26753e76b612eceb56f03e16a56c9bcd07e7cb9d86e49404df36afed2d616cb","isrc":"QZTB32211821","name":"(Don't Fear) The Reaper","registered_at":"2026-06-07T08:22:34Z","spotify_id":"7bxzKV1KSGzUerHN3asr8C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26753e76b612eceb56f03e16a56c9bcd07e7cb9d86e49404df36afed2d616cb. 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/7bxzKV1KSGzUerHN3asr8C.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/7bxzKV1KSGzUerHN3asr8C.
{"copyright_id":"0x4ec3ca7650caad99e7698febfd495d615fc0cd6312786023a9c5305e1db9e450","isrc":"QZK6J2222712","name":"Bad Moon Rising","registered_at":"2026-06-06T05:26:18Z","spotify_id":"3KUB0VeJ6PWKeZlfwwNav9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec3ca7650caad99e7698febfd495d615fc0cd6312786023a9c5305e1db9e450. 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/3KUB0VeJ6PWKeZlfwwNav9.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/3KUB0VeJ6PWKeZlfwwNav9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc0d41125cd50144668e3e2b93c566500a122fe463b485298f39fd16d78e59a. 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/1rFJflhbK24K48MdVSc3In.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/1rFJflhbK24K48MdVSc3In.
{"copyright_id":"0x582baeb90ebfb78e4f0583d83c6c6d3acbe00200e4047df7a63ac2e302a0c373","isrc":"QZHZ52267525","name":"Sulky Eyed Creatures - Nxghtshade Remix","registered_at":"2026-06-06T11:52:17Z","spotify_id":"2elw4uQxMGT0Oc2Lu1RQZ8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582baeb90ebfb78e4f0583d83c6c6d3acbe00200e4047df7a63ac2e302a0c373. 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/2elw4uQxMGT0Oc2Lu1RQZ8.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/2elw4uQxMGT0Oc2Lu1RQZ8.
{"copyright_id":"0x5c9bdab7eaf2d07563f5b8757014d825956886cee91fddaa2723a4bad943ffc2","isrc":"QZK6G2149863","name":"Nothing Else Matters","registered_at":"2026-06-07T08:26:23Z","spotify_id":"26FsgUGFGG3L67T9UVI4r4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9bdab7eaf2d07563f5b8757014d825956886cee91fddaa2723a4bad943ffc2. 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/26FsgUGFGG3L67T9UVI4r4.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/26FsgUGFGG3L67T9UVI4r4.
{"copyright_id":"0x7e81605a579bb80c30685fd90bca14f23dfa9d35bc1ecdb33c936977908194a4","isrc":"QZGLS2316243","name":"Alone Together","registered_at":"2026-06-08T21:27:58Z","spotify_id":"6SGHvEBVjXfszEok2U7FJ3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e81605a579bb80c30685fd90bca14f23dfa9d35bc1ecdb33c936977908194a4. 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/6SGHvEBVjXfszEok2U7FJ3.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/6SGHvEBVjXfszEok2U7FJ3.