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 0x5caff63ebbd66b29cc10f6cbfbdced05e6e4cd84353f33889f366248f18c1b4e. 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/3a73b1dd-37e7-4acd-b489-83bff9eae3b7.json and https://artists.proofprofile.net/proofs/artist/3a73b1dd-37e7-4acd-b489-83bff9eae3b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xbb8ca9023c09b71e7ba0798386b863da2e6e045e47c7a0fe946a1e99611ee98e. 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/6vVRMzHWlX0nGmV2JouMus.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/6vVRMzHWlX0nGmV2JouMus.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa867c00f624efaa9baa8b0c520aa2c1fcfe063afda8a5270d31a9804a600df14. 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/5nGIcsebcz6H5ZCoAYVQum.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/5nGIcsebcz6H5ZCoAYVQum.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923244c67a0b38eef8c859d67149cbbe0a5176f8783e64354f70762940706a0d. 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/5E0fJTYsdDDzBJKdW1XIwy.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/5E0fJTYsdDDzBJKdW1XIwy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddf3662658fdf5237449485c77195df8308ffc2d6edf75fe436e04384d6a201. 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/5Y76b8H4DbO4Go879oFhcM.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/5Y76b8H4DbO4Go879oFhcM.
{"copyright_id":"0xefc8fd3c1281cc73fbf05eacafef44b3752c20d880d9297693811441d3eada3e","isrc":"DEKN60900577","name":"Perfect Fit","registered_at":"2026-06-11T05:42:26Z","spotify_id":"7f0OpNd7yIQ4XaUEGJKlF3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc8fd3c1281cc73fbf05eacafef44b3752c20d880d9297693811441d3eada3e. 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/7f0OpNd7yIQ4XaUEGJKlF3.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/7f0OpNd7yIQ4XaUEGJKlF3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b24f9c17e99fde994a1739226c8e678461091293e892decfaef98b529b03bf. 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/7t0hsVEgTohhWIJJtpjMnJ.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/7t0hsVEgTohhWIJJtpjMnJ.
Don't Turn The Lights On - Orginal Version
{"copyright_id":"0xbedabba9b1eb55bae4b2958746574acd8945e95afc1ec519991634e2613a385f","isrc":"DEUE12333306","name":"Stay Until the Light","registered_at":"2026-06-19T10:44:33Z","spotify_id":"2SweYSLYKc1bvlHScRuvns","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedabba9b1eb55bae4b2958746574acd8945e95afc1ec519991634e2613a385f. 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/2SweYSLYKc1bvlHScRuvns.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/2SweYSLYKc1bvlHScRuvns.
Stay Until the Light - Oliver Koletzki's Extended Mix
{"copyright_id":"0xd4dc987d3ccc2dc9d22a1a2751e9fa136c75a2fd0902db46b9126b71e24fa55a","isrc":"DEUE12333307","name":"Stay Until the Light - Oliver Koletzki's Extended Mix","registered_at":"2026-06-27T00:27:18Z","spotify_id":"2y7ypId1lyWGGN3ZgtuNrT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dc987d3ccc2dc9d22a1a2751e9fa136c75a2fd0902db46b9126b71e24fa55a. 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/2y7ypId1lyWGGN3ZgtuNrT.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/2y7ypId1lyWGGN3ZgtuNrT.
Stay Until the Light - Niko Schwind's Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04824a270d1867782b9af2d638d81b8f0375f5835239ede959051410497c7626. 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/0dxGZPqk96n2K3N6otu7od.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/0dxGZPqk96n2K3N6otu7od.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c2957032e279cc2ff2d2fca1fdb19804180c8a45f907e1dc2b6bdb2c73c7ee. 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/7L567iPcbnYYpmfduZsj8n.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/7L567iPcbnYYpmfduZsj8n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf25220a207e042e3c4140198d9093f8f4e758905828aaf978c7b68a886deb1d. 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/4IJYFlOb1cxrCJVRSSnEnC.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/4IJYFlOb1cxrCJVRSSnEnC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0e7ea8567ce6cfff8b1dd5134b4bfa2e935da295723805748a93fe8377097c. 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/1cI3625uEHHuwPI21UfiMC.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/1cI3625uEHHuwPI21UfiMC.
{"copyright_id":"0x0bdaddb3ad63d63999cddfbfd609493d2ee10c36eb5d0b9c08e44ddf7a4d81c4","isrc":"DEY472177739","name":"Caminando de Noche","registered_at":"2026-06-06T17:10:24Z","spotify_id":"4L7g38G0N4RWSdaciFkTdQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdaddb3ad63d63999cddfbfd609493d2ee10c36eb5d0b9c08e44ddf7a4d81c4. 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/4L7g38G0N4RWSdaciFkTdQ.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/4L7g38G0N4RWSdaciFkTdQ.
Digital Vibrations (Incl. Niko Schwind Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35697215f42d78b4eb4e89caa3272dbb4191e6eb667f134b75dc0ffb1315cf0. 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/2lXdClPLTHf6feWj03uEKH.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/2lXdClPLTHf6feWj03uEKH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4057105671bd5e6c7cdd773ba8865a924d9212b116dc39c328c442b5605897a1. 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/5J84KcnY8ixd3bjA1vSLdB.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/5J84KcnY8ixd3bjA1vSLdB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491f1ca2209f52c0a7101e8198b1c66d21263d1efcd163eb7cb0b727b4492aab. 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/6EZx0YpJHf6nwQT6bKXq1o.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/6EZx0YpJHf6nwQT6bKXq1o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f07df5e08d23a2c84d56c54f38727ad1cbf70e0f91a1bd20687739576a1fd2. 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/4f3S1bxSOesTJC8G3NJwLF.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/4f3S1bxSOesTJC8G3NJwLF.
{"copyright_id":"0xd75767760a7e619ea8d2e668569dae15a5b84ba8983e77fcbac40587254e2429","isrc":"DEUE22057295","name":"Satinka - Kermesse Remix","registered_at":"2026-06-04T15:29:20Z","spotify_id":"6ofWjqQnbXjEqPmr4GfqOU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75767760a7e619ea8d2e668569dae15a5b84ba8983e77fcbac40587254e2429. 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/6ofWjqQnbXjEqPmr4GfqOU.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/6ofWjqQnbXjEqPmr4GfqOU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d427bc16eef6c87a2497bdc07644c25343044cb8e0e26bce89d3126d20ee9ec. 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/7FhS0WDdcyWPQYzfagOp6n.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/7FhS0WDdcyWPQYzfagOp6n.
{"copyright_id":"0xb617d2ed560dda361ecc0fcfea1e2382867ce5a865aa28a224dfb62c6251a18f","isrc":"DEUD91891199","name":"Subati - Andhim's Electrica Cucar Remix","registered_at":"2026-06-08T19:51:41Z","spotify_id":"28MustrkeetS4sdar9Z345","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb617d2ed560dda361ecc0fcfea1e2382867ce5a865aa28a224dfb62c6251a18f. 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/28MustrkeetS4sdar9Z345.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/28MustrkeetS4sdar9Z345.
{"copyright_id":"0x895e50e5ff0e733f808cbccd78afd318246fc814e5c18376e3e9bdeb99a408aa","isrc":"DEUD91891201","name":"Noordhoek - Xique Xique Remix","registered_at":"2026-06-23T04:51:08Z","spotify_id":"4f0ApvYundD6Ey3uYT0yP7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895e50e5ff0e733f808cbccd78afd318246fc814e5c18376e3e9bdeb99a408aa. 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/4f0ApvYundD6Ey3uYT0yP7.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/4f0ApvYundD6Ey3uYT0yP7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8ca9023c09b71e7ba0798386b863da2e6e045e47c7a0fe946a1e99611ee98e. 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/081FMBHryv1jwCoo6LMY0X.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/081FMBHryv1jwCoo6LMY0X.
{"copyright_id":"0x69145fd66c8ab1e9fd8828d35ebf185dfabdd379d9108815835daf6bdbb7b0dd","isrc":"DEUE21670541","name":"Over the Trees - Oliver Koletzki Remix","registered_at":"2026-06-18T00:04:19Z","spotify_id":"3VPmt2hYof7CELIpkXbxN7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69145fd66c8ab1e9fd8828d35ebf185dfabdd379d9108815835daf6bdbb7b0dd. 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/3VPmt2hYof7CELIpkXbxN7.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/3VPmt2hYof7CELIpkXbxN7.
Circles of Confusion - Several Definitions Remix
{"copyright_id":"0xfbeb626869a4c2428f52d3675dbd6b51920f586d27fed8513555b6f7940f9fc7","isrc":"DEKN60900590","name":"Perfect Fit - Proud Remix","registered_at":"2026-06-27T00:23:05Z","spotify_id":"1schXohBFVweqU2MQEXXeO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbeb626869a4c2428f52d3675dbd6b51920f586d27fed8513555b6f7940f9fc7. 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/1schXohBFVweqU2MQEXXeO.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/1schXohBFVweqU2MQEXXeO.