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 0x07d7eb16f7d4fd959e367964e628dbe4737e52b81c41611f2c03d61c1e7f66db. 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/386776e7-b48d-4d09-af3c-e30525e3c3f1.json and https://artists.proofprofile.net/proofs/artist/386776e7-b48d-4d09-af3c-e30525e3c3f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x437c840787d1c18305d1f12b76bd22b24ac26ef85d2766e40106cba1501758fc","isrc":"JPCO02413050","name":"New Tomorrow - JAPANESE ver.","registered_at":"2026-06-21T11:24:55Z","spotify_id":"6fyZPL9KBMCoaediH5Vbuf","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 0x437c840787d1c18305d1f12b76bd22b24ac26ef85d2766e40106cba1501758fc. 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/6fyZPL9KBMCoaediH5Vbuf.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/6fyZPL9KBMCoaediH5Vbuf.
{"copyright_id":"0x4e19dc67781b1adadbbebef58d99208c14b1893065376eca9e73623f67372404","isrc":"JPCO02413060","name":"Potential - JAPANESE ver.","registered_at":"2026-06-22T10:27:38Z","spotify_id":"6dgKZyIHD2XTeMSMUPtaxw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e19dc67781b1adadbbebef58d99208c14b1893065376eca9e73623f67372404. 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/6dgKZyIHD2XTeMSMUPtaxw.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/6dgKZyIHD2XTeMSMUPtaxw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02bcef60dfa5da94473a13c5982e2f64455ea106d5858a39500925f17fe2748. 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/6p2XJ6jx0NgJJMHY2HIle5.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/6p2XJ6jx0NgJJMHY2HIle5.
{"copyright_id":"0x197a901a83a0158e7abd4677a00d607310b33e1d0f65b1b4ebeb240a666b537d","isrc":"JPCO02413080","name":"One Shot - JAPANESE ver.","registered_at":"2026-06-22T12:45:25Z","spotify_id":"2THov0nfbRcnrHPNJozStd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197a901a83a0158e7abd4677a00d607310b33e1d0f65b1b4ebeb240a666b537d. 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/2THov0nfbRcnrHPNJozStd.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/2THov0nfbRcnrHPNJozStd.
{"copyright_id":"0x802e6e80e3e7632fb3afe967aed57ff45dba41078aa7870cfdaf711d6bf21881","isrc":"JPCO02413090","name":"Pitter-Patter-Love - JAPANESE ver.","registered_at":"2026-06-18T22:21:54Z","spotify_id":"07JfEFdoUWjTHh8CLWfF6J","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802e6e80e3e7632fb3afe967aed57ff45dba41078aa7870cfdaf711d6bf21881. 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/07JfEFdoUWjTHh8CLWfF6J.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/07JfEFdoUWjTHh8CLWfF6J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9b77afccdb7b0b69fd6e66841112daa0538c7145189cc22fb91a037ae9d981. 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/7whujK8aoJ3N0ZOPm6JWmp.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/7whujK8aoJ3N0ZOPm6JWmp.
{"copyright_id":"0x1a9902a7e610e08eb916c1e5fa327ada3a9ce42bf20f2b7f088d1895c6c22a2f","isrc":"KRA382403026","name":"Make Sunshine","registered_at":"2026-06-07T22:39:11Z","spotify_id":"1AYK0GEnEpwoartEVQIP2U","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9902a7e610e08eb916c1e5fa327ada3a9ce42bf20f2b7f088d1895c6c22a2f. 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/1AYK0GEnEpwoartEVQIP2U.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/1AYK0GEnEpwoartEVQIP2U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f0d880e65b3032d89290e1c4dc7f8cdf963f498cfeb1c2aaa49c40271633f3. 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/6I5LKTMYcXPTkUCLtPxMnS.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/6I5LKTMYcXPTkUCLtPxMnS.
{"copyright_id":"0x27b013aa15f165aece7da7f783781d39dc33653e7d41fcf09f6416ff3a2d5bcf","isrc":"KRA382403028","name":"Pitter-Patter-Love (Acoustic ver.)","registered_at":"2026-06-21T11:24:14Z","spotify_id":"1JGbVSAfIzas6MolAaNbbZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b013aa15f165aece7da7f783781d39dc33653e7d41fcf09f6416ff3a2d5bcf. 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/1JGbVSAfIzas6MolAaNbbZ.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/1JGbVSAfIzas6MolAaNbbZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf293744cb2a1b13366ef759bd5da0781d41896c83d22db1b9a095351afd603ee. 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/6ACF0cncZO5k6DNaDl36lI.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/6ACF0cncZO5k6DNaDl36lI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634a273964907505126d1ebe1ce0158825a6831ed578999fb513df9d755f4501. 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/1x4So9KFaL8DGfBQ8iRIaq.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/1x4So9KFaL8DGfBQ8iRIaq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340269f63a3c80bd1ac446f38c3b062445261aacbfec4826a151490607afa832. 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/2Mt0FdtzRrUgoE3PvFEfyB.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/2Mt0FdtzRrUgoE3PvFEfyB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfdf40f93a7fc15a5121774032a8c2b93c90326efb9a5b26de432220b17c076. 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/5NS0Mc4BYfxKbTJidhF6cJ.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/5NS0Mc4BYfxKbTJidhF6cJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c04d421b4d191e2ad1d23d2a1b70db5277d2c51985d53c9865a43bb382d90c5. 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/4bfXH65EhNsy1dcba6eahn.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/4bfXH65EhNsy1dcba6eahn.
{"copyright_id":"0x733fd09a91e2e027c4e19210d6df7c9c29d679d08011aef66e54ad17cbcfbced","isrc":"KRA382320686","name":"New Tomorrow","registered_at":"2026-06-06T19:53:04Z","spotify_id":"2ayD6EPasDViEQa4bwat0c","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733fd09a91e2e027c4e19210d6df7c9c29d679d08011aef66e54ad17cbcfbced. 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/2ayD6EPasDViEQa4bwat0c.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/2ayD6EPasDViEQa4bwat0c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2c53ad290d3edaa61cbc90f07c041c88a14246183a4c1e0c4d1dc1a8d21b64. 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/06EhJWiZmcHo9nh7dLDLPM.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/06EhJWiZmcHo9nh7dLDLPM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860945680172b3c19b37908004865a5541bab1ec38598303e949c4ddaaf9f886. 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/62nWAVF4ZnaRIpKRgh5zrM.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/62nWAVF4ZnaRIpKRgh5zrM.
{"copyright_id":"0xeeebaa372bb14546f660bc822365391d0a89b4fdff9b5547538ef7b0faad5043","isrc":"KRA382302797","name":"Shut Off","registered_at":"2026-06-18T06:50:10Z","spotify_id":"7ncgupkygDjXTKT9dgxBbu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeebaa372bb14546f660bc822365391d0a89b4fdff9b5547538ef7b0faad5043. 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/7ncgupkygDjXTKT9dgxBbu.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/7ncgupkygDjXTKT9dgxBbu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb61efe056f2ce575956dac20fef9b65f7a3f3e78f5223334faac265097e1734. 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/4v9mdCE9mirPOloxNUMd5s.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/4v9mdCE9mirPOloxNUMd5s.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ca90b04e73976c064460ffd0fffebf81d4d651ca500adb87ea0aa9e3d35f14. 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/0Gu28eZVBIn5xiZWwVHUXw.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/0Gu28eZVBIn5xiZWwVHUXw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780e55a5d8f085b0d3866da9351907a1a224becb27e6ccf4bc55f26ea761eae4. 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/5KAV2qomM7W7ZOy552ad7r.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/5KAV2qomM7W7ZOy552ad7r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7b535043296e4dfb0beb438891f352b42d22291e2f877a3f4b2166ab3fc4a3. 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/6zGpxpdPFKUjghMQ489Gjr.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/6zGpxpdPFKUjghMQ489Gjr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7843846d499f0ba027c9c4aae4845c50b1030030dff054185a81d8ed51006614. 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/1Hru2If0B66BHUfIf3bnUu.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/1Hru2If0B66BHUfIf3bnUu.
{"copyright_id":"0x4b70af9d56ecce21a0cfde3f26288cf5e520eb2903c468a15b5b54853ccbdd96","isrc":"KRA382302623","name":"Hold Tight","registered_at":"2026-06-08T23:46:19Z","spotify_id":"60GUsSKl2rZIzvgxPXWcHy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b70af9d56ecce21a0cfde3f26288cf5e520eb2903c468a15b5b54853ccbdd96. 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/60GUsSKl2rZIzvgxPXWcHy.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/60GUsSKl2rZIzvgxPXWcHy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276aa110b62b7f59e0347f995f7a5cfa5487612bd1933fd75fa17faf25716585. 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/7jxMVo8MV2gRLCoydKRZGf.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/7jxMVo8MV2gRLCoydKRZGf.
{"copyright_id":"0xbdc2db67a827b47efbc3dc4ded0ce0b388c03464bd778bc4756fb04ad8d3b31e","isrc":"KRA382404313","name":"To. My Dear","registered_at":"2026-06-08T23:36:19Z","spotify_id":"2cJlo0HKE7eAj4xYcdbY1P","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc2db67a827b47efbc3dc4ded0ce0b388c03464bd778bc4756fb04ad8d3b31e. 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/2cJlo0HKE7eAj4xYcdbY1P.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/2cJlo0HKE7eAj4xYcdbY1P.