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 0x0e063d37d615cfd54b49678bb69e2dac0a310e9e1e63346d86d566759273b4b3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3059aef4-fa27-4bef-b295-92197f59f589.json and https://artists.proofprofile.net/proofs/artist/3059aef4-fa27-4bef-b295-92197f59f589.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x54a4dfb618b52c306e4f625d458fb88d291b402fbd4df485f482b7ea316736ce","isrc":"NLFL72100294","name":"Break Your Neck","registered_at":"2026-06-29T15:08:36Z","spotify_id":"6Omdx7QTTJjDrlQbRWPfk9","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 0x54a4dfb618b52c306e4f625d458fb88d291b402fbd4df485f482b7ea316736ce. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Omdx7QTTJjDrlQbRWPfk9.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/6Omdx7QTTJjDrlQbRWPfk9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa104e2a17e9598e76bd65edeb59539801193e297aeeb5cd65d61f93456b4ba65. 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/6KQeQ48fGW7KwHJzQDKr08.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/6KQeQ48fGW7KwHJzQDKr08.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30f0921ee2e61b66e929c91c0f8fe570f44217806e607965fa795e9568716a6. 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/4qJgzoGhzF56yJADuoYZZT.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/4qJgzoGhzF56yJADuoYZZT.
{"copyright_id":"0xf9dffef83eb1d70c2b936d188de9e2028da87a9cf53160ee9d2029a497d87887","isrc":"NLFL72300107","name":"2 Clips Bitch - EQUAL2 Remix","registered_at":"2026-06-11T17:08:06Z","spotify_id":"4lXE7wLqtv4lKXVVtwufbD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dffef83eb1d70c2b936d188de9e2028da87a9cf53160ee9d2029a497d87887. 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/4lXE7wLqtv4lKXVVtwufbD.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/4lXE7wLqtv4lKXVVtwufbD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39493849824a672ddd4064f0952341b3da7bfefbf6e0d47aa50bb99c5f77dcac. 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/5cnqdEOFMbUWOBjcQ9M5FV.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/5cnqdEOFMbUWOBjcQ9M5FV.
{"copyright_id":"0xb1b429b4897c3c2a1153f54d279db92d5fc96000dd3f6afcd64f31fd08c56564","isrc":"GBKQU2290836","name":"Hardcore Night - EQUAL2 Remix","registered_at":"2026-06-24T15:46:27Z","spotify_id":"2OlxyeWFBWZ77GHYuieV6W","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b429b4897c3c2a1153f54d279db92d5fc96000dd3f6afcd64f31fd08c56564. 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/2OlxyeWFBWZ77GHYuieV6W.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/2OlxyeWFBWZ77GHYuieV6W.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b78723506fb94fdbe1234d3c205f4a5780251b8c975dce19c7bb3ded6dd2c5. 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/5kiykHRaB6f6xQoFbAgC4t.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/5kiykHRaB6f6xQoFbAgC4t.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8145730137170b8bf3312f0ab34ff908a98a1ce8d9df623ba0ba2219468e860. 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/6bik8nAh3WUWOQIuP8ro4Q.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/6bik8nAh3WUWOQIuP8ro4Q.
{"copyright_id":"0xbb15567b63ffaa22145898158ab5312b85d0ae4fecc540eeb1d919d244d714ba","isrc":"NLFL72400035","name":"Rock The Place","registered_at":"2026-06-10T06:59:47Z","spotify_id":"0biJVtGDHW0OpsWbd0vgEV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb15567b63ffaa22145898158ab5312b85d0ae4fecc540eeb1d919d244d714ba. 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/0biJVtGDHW0OpsWbd0vgEV.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/0biJVtGDHW0OpsWbd0vgEV.
{"copyright_id":"0xcd2a3762411c1270c054c7df2feacfead1a025430fbd756b2aac0480367700e8","isrc":"NLW2R2250984","name":"Digital - EQUAL2 Remix","registered_at":"2026-06-22T20:49:27Z","spotify_id":"1yUS3jMdzldr3mNlBuwSTU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2a3762411c1270c054c7df2feacfead1a025430fbd756b2aac0480367700e8. 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/1yUS3jMdzldr3mNlBuwSTU.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/1yUS3jMdzldr3mNlBuwSTU.
{"copyright_id":"0xb1b429b4897c3c2a1153f54d279db92d5fc96000dd3f6afcd64f31fd08c56564","isrc":"GBKQU2290836","name":"Hardcore Night - EQUAL2 Remix","registered_at":"2026-06-24T15:46:27Z","spotify_id":"6W9cQSQMDNtgCNwDDGg4jX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b429b4897c3c2a1153f54d279db92d5fc96000dd3f6afcd64f31fd08c56564. 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/6W9cQSQMDNtgCNwDDGg4jX.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/6W9cQSQMDNtgCNwDDGg4jX.
Masters Of Hardcore Chapter XLV (2023) - Cosmic Conquest
{"copyright_id":"0x36563d75e8fbab5af8b5dc0dd205448f59b8aedec775d6fbfb8bd8b55c31c706","isrc":"NLFL72101217","name":"Weak Mofo","registered_at":"2026-06-19T11:41:03Z","spotify_id":"7mOtRnBOjE6L2gA1lep14k","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36563d75e8fbab5af8b5dc0dd205448f59b8aedec775d6fbfb8bd8b55c31c706. 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/7mOtRnBOjE6L2gA1lep14k.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/7mOtRnBOjE6L2gA1lep14k.
{"copyright_id":"0xae625d587e8f487af6f472e08a41538cede8e7b6a1a7b4607f0d9638da4f1f55","isrc":"QZFYX2477093","name":"HARDCORE WILL NEVER DIE","registered_at":"2026-06-07T21:28:47Z","spotify_id":"7dzGM4EaFtGc6zkD1pI2vG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae625d587e8f487af6f472e08a41538cede8e7b6a1a7b4607f0d9638da4f1f55. 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/7dzGM4EaFtGc6zkD1pI2vG.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/7dzGM4EaFtGc6zkD1pI2vG.