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 0x0481e2a8086e53b595f7b754abb23cdefbfa97024c6de63d8e577b877b3388b2. 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/b06e02a2-f644-4850-8d65-57668dc3bcc6.json and https://artists.proofprofile.net/proofs/artist/b06e02a2-f644-4850-8d65-57668dc3bcc6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x0faa75505c80e62889d4b32186cec24e2828fde15200adc34216aa5f98642db4","isrc":"QM6P42310332","name":"Benden Bu Kadar - Akustik","registered_at":"2026-06-02T01:16:43Z","spotify_id":"6KMOrflBw5y7wZNx7CrbvC","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 0x0faa75505c80e62889d4b32186cec24e2828fde15200adc34216aa5f98642db4. 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/6KMOrflBw5y7wZNx7CrbvC.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/6KMOrflBw5y7wZNx7CrbvC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62768682970bf5903164e3fcae5235097c8cdf5f5d26ad9b2f823b25f74fa2a. 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/08Y7VgjV4z2zhvreZUesmg.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/08Y7VgjV4z2zhvreZUesmg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7e3a277e63304c12b0a29445012962eccc9351becd762f5775d5ccf4d1aa22. 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/0TB5oDsUnfoEIRn4P43DAZ.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/0TB5oDsUnfoEIRn4P43DAZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55623b0a92cdd17637ece0385acd7e9743143fe5ded602363d70098f824251f9. 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/6AzeGU0uMzT8gHaV21tiCn.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/6AzeGU0uMzT8gHaV21tiCn.
{"copyright_id":"0xd01630ea84bc95c10b2b13682473c5e3bf259c925e4166733d14ffc85326f828","isrc":"QMFMF2328212","name":"Sevdik de noldu sanki - Akustik","registered_at":"2026-06-11T16:54:03Z","spotify_id":"1SL1JzJkOCoxJnKYObZjTK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01630ea84bc95c10b2b13682473c5e3bf259c925e4166733d14ffc85326f828. 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/1SL1JzJkOCoxJnKYObZjTK.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/1SL1JzJkOCoxJnKYObZjTK.
{"copyright_id":"0x0f0ddc989928b0caf41d980de8dd9be25f24044a7c41a917a705ac575c6befcc","isrc":"QMFMF2328459","name":"Nirvana - Akustik","registered_at":"2026-06-09T15:06:47Z","spotify_id":"2s6n9VKdltAsQEq2okLuAd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0ddc989928b0caf41d980de8dd9be25f24044a7c41a917a705ac575c6befcc. 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/2s6n9VKdltAsQEq2okLuAd.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/2s6n9VKdltAsQEq2okLuAd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964b37d210284e91019e5aa8b1e6a155faaa410d68af3cd21041ee684bd82909. 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/2plOAElCtO0TLq333wUcgw.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/2plOAElCtO0TLq333wUcgw.
{"copyright_id":"0x2e0483a35b3064a05ee8bc9d11443638f47c4eacc5088e66ea01872da6715fca","isrc":"QM4TW2533766","name":"GÜZEL KIZLAR PATRON DİNLER","registered_at":"2026-06-07T03:01:23Z","spotify_id":"1uOM2qAGyxEPUGFjpDATVN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0483a35b3064a05ee8bc9d11443638f47c4eacc5088e66ea01872da6715fca. 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/1uOM2qAGyxEPUGFjpDATVN.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/1uOM2qAGyxEPUGFjpDATVN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f411682519284f6c6b49c782fe6b640413533e8e25e59d3d61ad9f481bad95. 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/4G7C1zrlEmG94UhJSt9Mst.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/4G7C1zrlEmG94UhJSt9Mst.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98aa3de42b0c7e1c70adfafebb90de0e52d006eb61845e47aca584b311cebb9. 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/7uMa3QFLkqKm0wDVMcblom.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/7uMa3QFLkqKm0wDVMcblom.
{"copyright_id":"0x0460bfaa65e84404bde4ad0d937cede2daaa1e5b873fea5d11f66e1e03e08068","isrc":"QM4TW2533801","name":"SLAM DUNK","registered_at":"2026-06-06T05:57:36Z","spotify_id":"6zFIcTjDtYqCgy1sfACDfT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0460bfaa65e84404bde4ad0d937cede2daaa1e5b873fea5d11f66e1e03e08068. 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/6zFIcTjDtYqCgy1sfACDfT.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/6zFIcTjDtYqCgy1sfACDfT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b36672f1eccd281f8ad1bd275089867cb1a3ba8cb6752694a4779bfea64b936. 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/5dVuYmS2J628cwMVSpd3yo.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/5dVuYmS2J628cwMVSpd3yo.
{"copyright_id":"0x0460bfaa65e84404bde4ad0d937cede2daaa1e5b873fea5d11f66e1e03e08068","isrc":"QM4TW2533801","name":"SLAM DUNK","registered_at":"2026-06-06T05:57:36Z","spotify_id":"0YlKhXUibXK9oTz7RiWMwF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0460bfaa65e84404bde4ad0d937cede2daaa1e5b873fea5d11f66e1e03e08068. 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/0YlKhXUibXK9oTz7RiWMwF.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/0YlKhXUibXK9oTz7RiWMwF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98aa3de42b0c7e1c70adfafebb90de0e52d006eb61845e47aca584b311cebb9. 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/6FYZOozMzqb5oNCdNoeAFU.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/6FYZOozMzqb5oNCdNoeAFU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f411682519284f6c6b49c782fe6b640413533e8e25e59d3d61ad9f481bad95. 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/46HGkv6VR4nTZxM8t8yNv2.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/46HGkv6VR4nTZxM8t8yNv2.
{"copyright_id":"0x2e0483a35b3064a05ee8bc9d11443638f47c4eacc5088e66ea01872da6715fca","isrc":"QM4TW2533766","name":"GÜZEL KIZLAR PATRON DİNLER","registered_at":"2026-06-07T03:01:23Z","spotify_id":"2LrcdPhS3LWTinTKE4gEU8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0483a35b3064a05ee8bc9d11443638f47c4eacc5088e66ea01872da6715fca. 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/2LrcdPhS3LWTinTKE4gEU8.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/2LrcdPhS3LWTinTKE4gEU8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964b37d210284e91019e5aa8b1e6a155faaa410d68af3cd21041ee684bd82909. 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/7FdenklCHAJxfOrQyN5xWg.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/7FdenklCHAJxfOrQyN5xWg.