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 0x359bc8280d8051e0f61d3c3b329a86932139cb2666b84e9fd92f8da2ac19215e. 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/bfb39644-85c0-48db-8292-d6d1acff0508.json and https://artists.proofprofile.net/proofs/artist/bfb39644-85c0-48db-8292-d6d1acff0508.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rock 'n' Roll With the Modern Lovers (Bonus Track Edition)
{"copyright_id":"0x8399fd0cb0cc1f64970548772b49b4f9d48cf4d1b89fb2595f65ec5f13ee492a","isrc":"GBAJE7700278","name":"The Sweeping Wind (Kwa Ti Feng)","registered_at":"2026-06-26T05:33:57Z","spotify_id":"7prOvtq5Nze3EjlVfRzahD","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 0x8399fd0cb0cc1f64970548772b49b4f9d48cf4d1b89fb2595f65ec5f13ee492a. 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/7prOvtq5Nze3EjlVfRzahD.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/7prOvtq5Nze3EjlVfRzahD.
{"copyright_id":"0xd668a22adb03a23f0afc8e9b35463f0e0d08919cff4d56149eb2ec6b07b3360c","isrc":"GBUM71104070","name":"Ice Cream Man","registered_at":"2026-06-08T15:43:07Z","spotify_id":"7hpoUuu1wzVCdP5ZawoiYI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd668a22adb03a23f0afc8e9b35463f0e0d08919cff4d56149eb2ec6b07b3360c. 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/7hpoUuu1wzVCdP5ZawoiYI.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/7hpoUuu1wzVCdP5ZawoiYI.
{"copyright_id":"0x7da9d1077d4d9676a7e31b3a460dfd60b716ed812d17b32550da6034fa879f48","isrc":"GBAJE7700280","name":"Rockin' Rockin' Leprechauns","registered_at":"2026-06-24T07:37:37Z","spotify_id":"22FTq743z6CCZouLYHRBLA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da9d1077d4d9676a7e31b3a460dfd60b716ed812d17b32550da6034fa879f48. 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/22FTq743z6CCZouLYHRBLA.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/22FTq743z6CCZouLYHRBLA.
{"copyright_id":"0x5efaccdce7e5bf11110d33ce20622ac63aa4346065f590e53910e82d5dea34e1","isrc":"GBAJE7700281","name":"Summer Morning","registered_at":"2026-06-23T20:07:15Z","spotify_id":"71Zz2PfnwBlkqKmrRyYUqo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efaccdce7e5bf11110d33ce20622ac63aa4346065f590e53910e82d5dea34e1. 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/71Zz2PfnwBlkqKmrRyYUqo.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/71Zz2PfnwBlkqKmrRyYUqo.
{"copyright_id":"0xec2cac3e96ca2df088a8f0248acbf71d61daf2b2d2044397ed2e20f86ddbe8fc","isrc":"GBAJE7700284","name":"South American Folk Songs","registered_at":"2026-06-07T16:12:15Z","spotify_id":"59hCD9o1KUDmMlIBiNkdeC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2cac3e96ca2df088a8f0248acbf71d61daf2b2d2044397ed2e20f86ddbe8fc. 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/59hCD9o1KUDmMlIBiNkdeC.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/59hCD9o1KUDmMlIBiNkdeC.
{"copyright_id":"0x35def8c69f910b3cd46eaebb6985cc7b2bbee04225e7577fdeb032120839a648","isrc":"GBAJE7700285","name":"Roller Coaster By the Sea","registered_at":"2026-06-18T23:28:20Z","spotify_id":"4BQAEOhQtLvxhKTErNvguG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35def8c69f910b3cd46eaebb6985cc7b2bbee04225e7577fdeb032120839a648. 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/4BQAEOhQtLvxhKTErNvguG.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/4BQAEOhQtLvxhKTErNvguG.
{"copyright_id":"0x3926050ecb15d68ca222d30dd4be253c25afb35229b7e4e5f9ea656c6691e9c4","isrc":"GBAJE7700286","name":"Dodge Veg-O-Matic","registered_at":"2026-06-20T14:29:16Z","spotify_id":"3sFmS99tvkyuGgjTUqwTTQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3926050ecb15d68ca222d30dd4be253c25afb35229b7e4e5f9ea656c6691e9c4. 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/3sFmS99tvkyuGgjTUqwTTQ.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/3sFmS99tvkyuGgjTUqwTTQ.
{"copyright_id":"0xfd91f3ab162152db3af710ad1645f0bdf332f3899995b8ad96f5be0def1da6e0","isrc":"GBAJE7700287","name":"Egyptian Reggae","registered_at":"2026-06-07T06:25:58Z","spotify_id":"7Gz7ZAOCTs6WGuCVRqldEy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd91f3ab162152db3af710ad1645f0bdf332f3899995b8ad96f5be0def1da6e0. 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/7Gz7ZAOCTs6WGuCVRqldEy.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/7Gz7ZAOCTs6WGuCVRqldEy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0a394a6ed19763381f5670858d1df8a79aa4049ce6042f89cce5f7331cdf21. 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/6THK10rTCieNieksT65eNT.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/6THK10rTCieNieksT65eNT.
{"copyright_id":"0xbabe3ae6fd38fdfc77724608c5db5eca7ea4914d8f7c12273323fd48a410a2a3","isrc":"GBAJE7200701","name":"Dignified and Old","registered_at":"2026-06-08T23:10:42Z","spotify_id":"7dqDFcbEJApgZzjEyPzfOd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabe3ae6fd38fdfc77724608c5db5eca7ea4914d8f7c12273323fd48a410a2a3. 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/7dqDFcbEJApgZzjEyPzfOd.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/7dqDFcbEJApgZzjEyPzfOd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6131a1349529ea4bb6c6f4e88b8a8649f4e6b82c07f77c741427d79ffd037bae. 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/4ugtTQugNpg2NrwaPSFnIs.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/4ugtTQugNpg2NrwaPSFnIs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5baea975d642993c2c19836e55d9e53f1546cb2e257f3a981642877efbde97. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6ITYA8x3jS7MZ6WBhDggpf.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/6ITYA8x3jS7MZ6WBhDggpf.
Jonathan Richman & The Modern Lovers (Expanded Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eccbfc3265002fef69765becd8946868f4f289b78ae930675239288d8fd8789. 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/1h0RPW5ZUb7brHNgbXSSkT.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/1h0RPW5ZUb7brHNgbXSSkT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5baea975d642993c2c19836e55d9e53f1546cb2e257f3a981642877efbde97. 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/7wj3PmmPSDuPcpoxFXCea2.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/7wj3PmmPSDuPcpoxFXCea2.
Baby Driver (Music from the Motion Picture)
{"copyright_id":"0xef2842c5854ab9e99efba3dbdf8e95119350df8a192f2ebf94af393a5a70e031","isrc":"GB5KW2105079","name":"Egyptian Reggae","registered_at":"2026-06-04T09:51:17Z","spotify_id":"426eL4gFMqgtu3hulUEMFs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2842c5854ab9e99efba3dbdf8e95119350df8a192f2ebf94af393a5a70e031. 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/426eL4gFMqgtu3hulUEMFs.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/426eL4gFMqgtu3hulUEMFs.
{"copyright_id":"0xfd91f3ab162152db3af710ad1645f0bdf332f3899995b8ad96f5be0def1da6e0","isrc":"GBAJE7700287","name":"Egyptian Reggae","registered_at":"2026-06-07T06:25:58Z","spotify_id":"1NBp4Y97Dab7vOqGWTEdpz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd91f3ab162152db3af710ad1645f0bdf332f3899995b8ad96f5be0def1da6e0. 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/1NBp4Y97Dab7vOqGWTEdpz.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/1NBp4Y97Dab7vOqGWTEdpz.