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 0xcb85be35389aeb99312a78003d8da8eff4b4da358dc944d85cfd6e5190411a03. 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/9343cd3e-0f26-418c-81ca-595509da2eac.json and https://artists.proofprofile.net/proofs/artist/9343cd3e-0f26-418c-81ca-595509da2eac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xdfc1aa92b75c1d7fe7daafe4539c6d19ebd3fe33c314ffee7db1f54f0243e0f7","isrc":"GBKPL2152389","name":"Moonstruck - Lunar Funk Remix","registered_at":"2026-06-19T10:17:55Z","spotify_id":"3oYDuYuN756KmiCoQoM92e","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 0xdfc1aa92b75c1d7fe7daafe4539c6d19ebd3fe33c314ffee7db1f54f0243e0f7. 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/3oYDuYuN756KmiCoQoM92e.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/3oYDuYuN756KmiCoQoM92e.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c47e60c540f5b17513f63f755c141700b23e12e202e99dca3773dc69fb6887. 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/1iZlALTNph3uyLQqmHUJE9.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/1iZlALTNph3uyLQqmHUJE9.
{"copyright_id":"0xe18bdca0d6b3a01a3378ee8a4ec3f5b81aa96670bd140d29c1e22266e0121e21","isrc":"QZU4P2300059","name":"Taboo (JAYCiX Remix)","registered_at":"2026-06-17T23:32:58Z","spotify_id":"6jQSY3uiYQcfN6yScylESn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18bdca0d6b3a01a3378ee8a4ec3f5b81aa96670bd140d29c1e22266e0121e21. 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/6jQSY3uiYQcfN6yScylESn.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/6jQSY3uiYQcfN6yScylESn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae7ce8cd51363e29478c20cfe78b9a254eee2b18b38a3252628c94a005eb725. 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/3rfMUHpUi46RMSpS0pJa1w.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/3rfMUHpUi46RMSpS0pJa1w.
{"copyright_id":"0xb154dd6d315c814a24928ec414dbe59af667cc4188bfb92c5b9997611aedeec8","isrc":"NL8RL2333345","name":"King Of Hearts","registered_at":"2026-06-10T03:27:23Z","spotify_id":"1RChkybcyhz9wYAJ32FIbR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb154dd6d315c814a24928ec414dbe59af667cc4188bfb92c5b9997611aedeec8. 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/1RChkybcyhz9wYAJ32FIbR.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/1RChkybcyhz9wYAJ32FIbR.
{"copyright_id":"0xf50db03ceec5c28ec7a8a9911d38c2504ff5658f75f7e8b16e2edbcc5dc255cf","isrc":"NLUW22302243","name":"Another Minute","registered_at":"2026-06-10T16:48:09Z","spotify_id":"4NrI7NKikhlOt9Hxa3sR0T","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50db03ceec5c28ec7a8a9911d38c2504ff5658f75f7e8b16e2edbcc5dc255cf. 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/4NrI7NKikhlOt9Hxa3sR0T.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/4NrI7NKikhlOt9Hxa3sR0T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e1fa97ff68e4f9092894c6de2e2e58672c8cb3a3f7c82a901da4c3577032bf. 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/0tpB1vEXAi5E1U0nT2bf55.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/0tpB1vEXAi5E1U0nT2bf55.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fdbbcdd83f2ccf50a1fa6b1de6f21129c374f176a851a1dc275e87bfb79916. 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/4i1OvhClio4ut6FxI7oZxu.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/4i1OvhClio4ut6FxI7oZxu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f0e2d2e15b1af32f32a320e17198a1328045b4c0a2818629dc2cf6f36e3e11. 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/1hWsTtpwrPGLqI8cDX3sWr.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/1hWsTtpwrPGLqI8cDX3sWr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed827e44a340262e76570327450e28419dae4c0df8ec0cf8891397eea30cece4. 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/62Yf325p76wEBIvz5lzVIl.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/62Yf325p76wEBIvz5lzVIl.
{"copyright_id":"0x63d13d3e585bdb3f8b9a6c5fe45eeac59afa37f0575cb7b7be3bc3e9c03c9a05","isrc":"TCAHL2333333","name":"Feels Like Us","registered_at":"2026-06-21T00:48:38Z","spotify_id":"4EwdOwxRKJ1PwtM6hE650o","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d13d3e585bdb3f8b9a6c5fe45eeac59afa37f0575cb7b7be3bc3e9c03c9a05. 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/4EwdOwxRKJ1PwtM6hE650o.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/4EwdOwxRKJ1PwtM6hE650o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe111e05fa6c17664399cea75bacfa8ae957752404b680f2fe7794d3a38845483. 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/5E5tJTiPf40qlClhAko0PT.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/5E5tJTiPf40qlClhAko0PT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21406cb5c6fa903a5e95b5929014be9b46e8cae4315fa10be1c155271981e9d. 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/2YOQ9eRPcihRwsL6Outikn.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/2YOQ9eRPcihRwsL6Outikn.
{"copyright_id":"0xfaef89fa27f7c91df344cf780dc17dd50c2e075d25ddbf3a647758723cc4f05b","isrc":"QZWDD2339887","name":"Red Riding Hood","registered_at":"2026-06-20T05:24:56Z","spotify_id":"47iBFie4dkD4Y84heBfXzI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaef89fa27f7c91df344cf780dc17dd50c2e075d25ddbf3a647758723cc4f05b. 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/47iBFie4dkD4Y84heBfXzI.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/47iBFie4dkD4Y84heBfXzI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01ac8a9f772d720111c6ca18f9272f40f344880070480a2aa3830e5fb33006c. 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/3Kn9aCrLGHMMXysnzlkq4g.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/3Kn9aCrLGHMMXysnzlkq4g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f66f1c44c420147c7e51104ab28704bc40619cd41147515c44fb853f319c12. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:42:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1QnH1ej1X6RBK2kDPE4cAo.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/1QnH1ej1X6RBK2kDPE4cAo.
{"copyright_id":"0x08fcbb7b1ff52f5898b9a01624eeb5e39b029555b5b48c11f76ebab66974edd0","isrc":"TCAHC2323169","name":"Tell Me What You Want","registered_at":"2026-06-19T05:18:16Z","spotify_id":"3J0CfSDLb0AIZuOXZfishQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fcbb7b1ff52f5898b9a01624eeb5e39b029555b5b48c11f76ebab66974edd0. 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/3J0CfSDLb0AIZuOXZfishQ.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/3J0CfSDLb0AIZuOXZfishQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c116f36360b22299cb6676ba538ea72572698cea143f52b07670e181b92138. 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/4c9Lu3OYu8Z4OOdmkeRVYJ.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/4c9Lu3OYu8Z4OOdmkeRVYJ.
{"copyright_id":"0x3351ba17c8e6f3a272e9418f6815a3c875e08253b2d557febd6910a87f4fbf60","isrc":"QZK6P2312271","name":"I'm Not Over You Yet","registered_at":"2026-06-06T23:45:16Z","spotify_id":"7BnQfVHFshz4RxqwrSzkao","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3351ba17c8e6f3a272e9418f6815a3c875e08253b2d557febd6910a87f4fbf60. 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/7BnQfVHFshz4RxqwrSzkao.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/7BnQfVHFshz4RxqwrSzkao.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2670d97a63203b15c5b0d69869dda5f4cb0e5cc780620f52f30387701a62b78a. 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/5Fh9yChHnryATYe5XW3taC.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/5Fh9yChHnryATYe5XW3taC.
{"copyright_id":"0xd1f08adb765feaf4997a753ea51372334cdda5da0467dea5b9b8cd36e7a40a28","isrc":"NLYK92300064","name":"Play That Sax","registered_at":"2026-06-11T09:19:37Z","spotify_id":"31zjyVnJqTFGTq3ZvZ08M3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f08adb765feaf4997a753ea51372334cdda5da0467dea5b9b8cd36e7a40a28. 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/31zjyVnJqTFGTq3ZvZ08M3.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/31zjyVnJqTFGTq3ZvZ08M3.
{"copyright_id":"0xa9f7a59b7bc36c577b126d41f1fa4e55085d38f5c8b376b8ca4553dfc7c39df2","isrc":"QM6MZ2214383","name":"Stained Glass","registered_at":"2026-06-08T19:48:38Z","spotify_id":"0BnGInyKrTFBNLEVBy2Lxb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f7a59b7bc36c577b126d41f1fa4e55085d38f5c8b376b8ca4553dfc7c39df2. 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/0BnGInyKrTFBNLEVBy2Lxb.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/0BnGInyKrTFBNLEVBy2Lxb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c40588d749e3834fe941fe2721d84879629ff91502f36185b96a663b7e0ba9. 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/6cuvL42pVssV1fsG3oc2Cq.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/6cuvL42pVssV1fsG3oc2Cq.
{"copyright_id":"0xfd4192d37f1ede6b3d8cd2892d90451d79bb04de9befe196def7ed79b1cec493","isrc":"CAQOI2200072","name":"Like Heaven","registered_at":"2026-06-11T09:19:41Z","spotify_id":"7vUjlfCDup35E7ekk94QRs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4192d37f1ede6b3d8cd2892d90451d79bb04de9befe196def7ed79b1cec493. 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/7vUjlfCDup35E7ekk94QRs.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/7vUjlfCDup35E7ekk94QRs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5065f5f75bb0c32bc265aa678a1dfd21382a67c1259b78e807339dc34b720929. 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/7lK8Sg0hOkqBhzsBdSvNJm.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/7lK8Sg0hOkqBhzsBdSvNJm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35720e0cf2322f93bb89aa7701a20709353343758e7336d8e586a78c38652fd8. 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/6I1b0kdn2WpGyGHy4NGZqT.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/6I1b0kdn2WpGyGHy4NGZqT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211bba09877880f5e789286ba4962741acef59b36032462b2941a4c57cd22e35. 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/44DGIVwkKaFxV0Dvs8kpfF.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/44DGIVwkKaFxV0Dvs8kpfF.