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 0xe71aa9a684d67c08e4d59f21c58c19f095a7eddab1c45bbfc0849456763ea88a. 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/7ec56fe7-935e-4a76-af0d-2e64bc9cb455.json and https://artists.proofprofile.net/proofs/artist/7ec56fe7-935e-4a76-af0d-2e64bc9cb455.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x214da90e7095bb5e3468aad3200602b4f70e5ab08abfd6e6d7b36b62452b186e","isrc":"US7VG2367580","name":"Rkteando - Remix","registered_at":"2026-06-04T15:41:48Z","spotify_id":"0EBblLqWUMgOo0LPLnszAg","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 0x214da90e7095bb5e3468aad3200602b4f70e5ab08abfd6e6d7b36b62452b186e. 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/0EBblLqWUMgOo0LPLnszAg.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/0EBblLqWUMgOo0LPLnszAg.
{"copyright_id":"0xc77d91a10abf0a164aa315fddfa91f9643f6a6d3fec3e45e263c2e598fe8a1dd","isrc":"QZNJV2305948","name":"Carpe Diem","registered_at":"2026-06-22T01:10:17Z","spotify_id":"2aG5jnSGJVLrutTzGfk0US","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77d91a10abf0a164aa315fddfa91f9643f6a6d3fec3e45e263c2e598fe8a1dd. 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/2aG5jnSGJVLrutTzGfk0US.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/2aG5jnSGJVLrutTzGfk0US.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad543db2b8b5fa116b6c7a41c75700c6c280fb3a6346832ab6f3228469c9f44. 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/6Wpf8WyhYV9g49t1Lh9sWz.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/6Wpf8WyhYV9g49t1Lh9sWz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724c5423337ef19e047cefbe3a86ea77a3f5c5f832df62013c7568a5a2626b03. 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/0H2sIpkNJRshjFZubiJ5lY.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/0H2sIpkNJRshjFZubiJ5lY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78228c58decf6e1509f40fe23f481b2ae53e60bd3cd80d751a287622576f47ca. 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/2iLD8FAbEbrLj3MXHipf8y.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/2iLD8FAbEbrLj3MXHipf8y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3ebc7ae2c7added30e582f55abc0f9343287d33da80efb80b7377784d8c383. 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/1lAgT3yumaPp5Uedd1hB0P.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/1lAgT3yumaPp5Uedd1hB0P.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097852456142116406bb95c882e52a4150eb92b4b25583a5ecc39bc55c003f52. 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/3R7QUoJOF3HBekCl0qsCzw.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/3R7QUoJOF3HBekCl0qsCzw.
{"copyright_id":"0x8419d50d0a5f3c91a9e984c5313ef6eea74f2a1178becc016b7a1d29e0921bc3","isrc":"QZNJY2207623","name":"Rkt Bien Duro","registered_at":"2026-06-23T05:07:44Z","spotify_id":"0VWGSal7KQ9IEwDZ7W4BTj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8419d50d0a5f3c91a9e984c5313ef6eea74f2a1178becc016b7a1d29e0921bc3. 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/0VWGSal7KQ9IEwDZ7W4BTj.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/0VWGSal7KQ9IEwDZ7W4BTj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6a720034354c1b21e9c6e53ae21b76a32ae291a7cb848306c0c6485181f82a. 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/1T9SKU1jZOFI69p5rWJC4T.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/1T9SKU1jZOFI69p5rWJC4T.
{"copyright_id":"0x7d647b7c1e8026deb19458c74a3e7d7aa16eec25cfb7abf547532560bce78bbc","isrc":"QZHZ32126613","name":"Like Rally","registered_at":"2026-06-05T17:01:44Z","spotify_id":"3kWI5ynRzboyJt8SvelOhx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d647b7c1e8026deb19458c74a3e7d7aa16eec25cfb7abf547532560bce78bbc. 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/3kWI5ynRzboyJt8SvelOhx.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/3kWI5ynRzboyJt8SvelOhx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474537b59b8b1ca5d735bef7261d760be1f7ee4295f147e07bc1a303f8ef5a28. 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/1UHqR2X8D9wFZubrP6BSY0.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/1UHqR2X8D9wFZubrP6BSY0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673c6d11240a9cd5d2a73e48e32993fda8a41d4bf5fdfa038947df713a85e9d2. 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/4FJwDMWhJxhirghJu8jH1g.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/4FJwDMWhJxhirghJu8jH1g.
{"copyright_id":"0xacf371fa5b5a8892ae2936ff8e6a6de83221c66b1a11bfde620beed5d6366ef1","isrc":"QZW9K2429872","name":"Mis Alas","registered_at":"2026-06-20T18:46:47Z","spotify_id":"65SAeXlA2gmV1rrMPjPrCb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf371fa5b5a8892ae2936ff8e6a6de83221c66b1a11bfde620beed5d6366ef1. 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/65SAeXlA2gmV1rrMPjPrCb.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/65SAeXlA2gmV1rrMPjPrCb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3d7b766dfefd2d12cadcba9fed9e96137fca00b8e8c2edbd8898b6d0f687ed. 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/3ZAWgGUb1khX9S1byMgVAT.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/3ZAWgGUb1khX9S1byMgVAT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38ea42d041a626adfba3e0267f9b4642f24bbee95eb8862287bd195f4359980. 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/1hulZq2Dg7sJ1FyOH0Vqc1.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/1hulZq2Dg7sJ1FyOH0Vqc1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df50de2fa8cfd4837f248c9afd8286acab4c5562e5c094b2462318fa18deb41. 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/7AR2kJRUUWWemCABVYWfJx.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/7AR2kJRUUWWemCABVYWfJx.
{"copyright_id":"0xacf371fa5b5a8892ae2936ff8e6a6de83221c66b1a11bfde620beed5d6366ef1","isrc":"QZW9K2429872","name":"Mis Alas","registered_at":"2026-06-20T18:46:47Z","spotify_id":"6Q8Ewsev4K7Kmhhd0mkTKj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf371fa5b5a8892ae2936ff8e6a6de83221c66b1a11bfde620beed5d6366ef1. 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/6Q8Ewsev4K7Kmhhd0mkTKj.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/6Q8Ewsev4K7Kmhhd0mkTKj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38ea42d041a626adfba3e0267f9b4642f24bbee95eb8862287bd195f4359980. 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/2LpklX8ChMh8WRJZDSXmfv.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/2LpklX8ChMh8WRJZDSXmfv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868197cd0e2f62ce99cab3064b91ca94caf9f83eb322d254181f172eeb00f528. 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/6v61ngbjtXLtTaxCKo6stH.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/6v61ngbjtXLtTaxCKo6stH.
{"copyright_id":"0x59da09f2e13f34d49791bb126ebd003e7af617ad024b8a95c03f8c9c21cd4461","isrc":"QMFMG2376777","name":"Sin Piedad","registered_at":"2026-06-28T22:36:08Z","spotify_id":"4EG1uyLrhBCVLuzoePmvvc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59da09f2e13f34d49791bb126ebd003e7af617ad024b8a95c03f8c9c21cd4461. 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/4EG1uyLrhBCVLuzoePmvvc.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/4EG1uyLrhBCVLuzoePmvvc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4458c038ddb4d6eea922b115778d211725095459404eee951487a07a688d5b41. 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/2WJaJF3MO9zIevmhhXc6o7.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/2WJaJF3MO9zIevmhhXc6o7.