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 0x0fb2afe260889a05c45e669bf020bc4cf141b3e343ad58462d32fd9da229b31a. 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/f886c379-14b0-41b0-9ddc-f44ed050b2d0.json and https://artists.proofprofile.net/proofs/artist/f886c379-14b0-41b0-9ddc-f44ed050b2d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa1b7d014b098d51f8e11c93e78ac48d2968d2f4eb31da81250ef962269b896bc","isrc":"TCADJ1717412","name":"Ako by Bol Posledný","registered_at":"2026-06-24T17:45:43Z","spotify_id":"1AK0Vtzc6qNgtyahttjIbS","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 0xa1b7d014b098d51f8e11c93e78ac48d2968d2f4eb31da81250ef962269b896bc. 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/1AK0Vtzc6qNgtyahttjIbS.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/1AK0Vtzc6qNgtyahttjIbS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fdfe657c00307568398ef58b5e133979ca2e2425c7c5ca4330ec814779abeb. 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/15xleItjOw6YSwLu8K8zzW.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/15xleItjOw6YSwLu8K8zzW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7d8ce09758b95b2d594e21e105e076a63bb39ddf6415ecfb69a16336f73825. 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/7jDs6DP02AYAQpJTdSo9Rx.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/7jDs6DP02AYAQpJTdSo9Rx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad86ebed82815a0fde4f02a34b0132e7f06c8a916fc4650092f951e93bd03a49. 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/7h1jGzXwHrJGD0DhBd1E2f.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/7h1jGzXwHrJGD0DhBd1E2f.
{"copyright_id":"0x47c01baee137eecfeca6fd9eeffb7dc4e60537fec37dabea91196278557a091f","isrc":"TCADP1828692","name":"Prestaň byť jebnutý","registered_at":"2026-06-18T19:48:40Z","spotify_id":"6wuopH2QrU6oYl1BULtsak","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c01baee137eecfeca6fd9eeffb7dc4e60537fec37dabea91196278557a091f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6wuopH2QrU6oYl1BULtsak.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/6wuopH2QrU6oYl1BULtsak.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f53c5b4581fb81e12d61ca6021913326fb6996baf7399c7506c3fbbe02b18e1. 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/5np6rUlrWjneRlxN369tjV.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/5np6rUlrWjneRlxN369tjV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6141a061b6fc710f8b68b0f48d6118d7a9db4f177d2d9bfb6c8484a48972998d. 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/0YzQgofIV2IAI5ItuuZWI9.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/0YzQgofIV2IAI5ItuuZWI9.
{"copyright_id":"0x053a2c8e8135cffedd24330d643bfedc8705dfa4775acd142ba31c4043e46cc7","isrc":"QZES71870402","name":"Sam Uz Nebyt Tien","registered_at":"2026-06-27T12:10:33Z","spotify_id":"3XPlAw6GL0cvIA939DiwON","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053a2c8e8135cffedd24330d643bfedc8705dfa4775acd142ba31c4043e46cc7. 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/3XPlAw6GL0cvIA939DiwON.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/3XPlAw6GL0cvIA939DiwON.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804cc8049813ba9df7ca160e809905cdfa78a3c13e75cf1ab79c3cc8527fb545. 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/5GUksKRiWk90T5Z1mbsaJe.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/5GUksKRiWk90T5Z1mbsaJe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cad119a9548edda4abf5c404bcd435eb1496f254db225015ce85bffe816b45c. 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/1Dnm563iUysGVXi3syBvNA.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/1Dnm563iUysGVXi3syBvNA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634e5d2e518acb9a7a8d32913e18832015d9e83787be8f480f6c34826d33d6db. 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/0zOZBynBwcxo8tC9HdLEzQ.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/0zOZBynBwcxo8tC9HdLEzQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb53eedc458fd9557daf4dd8d5667f191dafc89fbae127b201aadd371c58d31. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1QCgakCkV9KEhcCG0Rxxrm.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/1QCgakCkV9KEhcCG0Rxxrm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17dc1c9916a3d64e4ae3604a739a76d87298785f93fdbfebb5da82e27f260c8. 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/7fldINgHPOQz3pyHuH8quC.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/7fldINgHPOQz3pyHuH8quC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a597625a74ab9d943aeee2195cefdd64e56010a9338ea19d831c2216a5caff3. 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/533iB0ik9Lx2g75zs1lsCQ.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/533iB0ik9Lx2g75zs1lsCQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a8d0201dbf438c464b7fabd51e35b09a9b4466b2143fe021e0a06b012ec1d8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/44oMd69tKr1ezRZfVwGVzZ.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/44oMd69tKr1ezRZfVwGVzZ.
{"copyright_id":"0x30f5a5e554f96732d0dab8c65022deb1a84e67444c78e54f558dfa550c6cedf5","isrc":"SKH811500208","name":"Čerti (feat. Čistychov)","registered_at":"2026-06-11T15:19:16Z","spotify_id":"1vrW9clgImLHiSfyKd8wJO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f5a5e554f96732d0dab8c65022deb1a84e67444c78e54f558dfa550c6cedf5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1vrW9clgImLHiSfyKd8wJO.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/1vrW9clgImLHiSfyKd8wJO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53978c163846296cc6a0af0ba1bd04e5b5348383987e5118d6da30d9dd9435d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4QrHWublasyN5S6ZHcWLrO.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/4QrHWublasyN5S6ZHcWLrO.
Láva (feat. Anabela Mollová & Martin Kráľ)
{"copyright_id":"0x1f05a9890950efff837d260e8dadc7adb85cf7725ce2fecbee97b252c45f3f72","isrc":"SKH811500210","name":"Láva (feat. Anabela Mollová & Martin Kráľ)","registered_at":"2026-06-07T21:26:43Z","spotify_id":"4cmr11QE3r1cUk2kY2AVJQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f05a9890950efff837d260e8dadc7adb85cf7725ce2fecbee97b252c45f3f72. 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/4cmr11QE3r1cUk2kY2AVJQ.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/4cmr11QE3r1cUk2kY2AVJQ.
{"copyright_id":"0xc4b5d8c5c591dccab99e6c9873cd28ebc12b045c2100646f4cfcc6f2bb7f66ef","isrc":"SKH811500212","name":"P.S. (feat. Šipo, Rest & Kali)","registered_at":"2026-06-08T13:52:34Z","spotify_id":"1eCtlzk2eK0KCmFb62KG3m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b5d8c5c591dccab99e6c9873cd28ebc12b045c2100646f4cfcc6f2bb7f66ef. 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/1eCtlzk2eK0KCmFb62KG3m.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/1eCtlzk2eK0KCmFb62KG3m.
Pod Pazuchou (feat. Majself, Boy Wonder & DJ Mikroman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26bf100aa9d9b525bfb4ccd0a5bb156e97bc022ab173368d680b052470e192a. 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/20pJwOf6oawIy3wjAUo4wR.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/20pJwOf6oawIy3wjAUo4wR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff72ade59b20241e0112261dd2c7548288673cf96091047640990645c2bce003. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5twO41eGpFnfAZmvUzioq4.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/5twO41eGpFnfAZmvUzioq4.
{"copyright_id":"0x62b6263700475d4ce5ea14dd1efb0df5000432f102fb811c6bcec0c0dcda6932","isrc":"SKH811500105","name":"Ulica Jak Ulica","registered_at":"2026-06-22T06:57:37Z","spotify_id":"4JahSGtxu4vPxlDB4founK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b6263700475d4ce5ea14dd1efb0df5000432f102fb811c6bcec0c0dcda6932. 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/4JahSGtxu4vPxlDB4founK.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/4JahSGtxu4vPxlDB4founK.
{"copyright_id":"0x87476ab633f9e2c76ea897bc0843de9d3ce4db8600f832374bdb24a437a5bbdf","isrc":"SKH811500107","name":"Ty Mi Nevyprávaj","registered_at":"2026-06-09T10:01:36Z","spotify_id":"4JLpmM78PmgB6orXLiVOZ1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87476ab633f9e2c76ea897bc0843de9d3ce4db8600f832374bdb24a437a5bbdf. 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/4JLpmM78PmgB6orXLiVOZ1.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/4JLpmM78PmgB6orXLiVOZ1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006173a0dc9873ee0d2b45b9f02e0cb84b2190a3792ace8101544a40ead5279f. 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/2h8ifrSItEZDoNyCRBG0AS.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/2h8ifrSItEZDoNyCRBG0AS.