1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb106b2e0aca02855ac8f4f6ba905f69f4084ccfa1370e04e41efde18935a208d. 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/fbae64d0-ca7e-4497-b5ce-ada462ff90c6.json and https://artists.proofprofile.net/proofs/artist/fbae64d0-ca7e-4497-b5ce-ada462ff90c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb02ff7930595254e77fab3a0743365620e5e57654fcb8cf89dc03eb05972d9c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601880219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbff61783f56e35ea030ffc5b292e16f613deba3f8e43576d31e715fee0793d9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601880220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcf367a168fe43480a4089b094f25e2733338c44bdf7925e3cb918f64f2b25d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601885805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851940dafc5b6997d491871a5c1c842ca6a97242b85599d7148b632ce968be80. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602054239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cc3ccecc759ad3203f7bd0c99eac53905e3d072610a7323ee702c14ea34cc3. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602055550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cc3ccecc759ad3203f7bd0c99eac53905e3d072610a7323ee702c14ea34cc3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602055550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59757c2f72ff923e3710713024f3e0bfe823fb55e01b2d32a6aa10b764047239. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:49:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602055551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6b38816471bf7fc492ce5605f1ba44aca370f383824499980a1ef207a8ceb6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:33:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602058993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ea6289c978e6c9b59069c026ba75f4be51dbe59812ed2e7c8bda57fea27964. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602059024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2737f62efdbebdbfe7592c17c4e6ffcecd3a742bb36de58d917e9ba597f406fc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02002565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf383e06ba6905a1162ad74cd2ad352ea622364555796899627d2e953a9619dc3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02002566.
この曲が人生最後の僕の代表曲だったら
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da6728e55cdb1070d47b69c379d7739e079bd97636235fbf7ee8611147ee6c1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02100115.
Konokyoku ga Jinseisaigo no Boku no Daihyokyoku dattara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59844ab49cbc53643e9e31ef3d90e598e6bacec4f4af4fd75231e1a1b7333cb8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02100793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9780116b7b2d79cdc12bf8701210a8e33f8b57dfc826404827842c049f491baf. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02101117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9780116b7b2d79cdc12bf8701210a8e33f8b57dfc826404827842c049f491baf. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02101117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2aad2b6843b21cb93cd78110acd267273a9c4c44e265acb8f1cfdfcb6a7660. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02101239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd998f20ae40245d62a556fe328f6c565502ee48d85dd8daa893acb1ed0008624. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02101240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c8ac61b80fb8a61d8e9b07a6f798bd7b7869cd98b8813906e70ef6043d2e3. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02101051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bc70a730669b6d6f722b73546b545ee3dcec29239898a1cdc60d482a34b4de. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02101053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a17467d7d49de8a8b5085522b1031e43bbdb99fff0c181062249d89eaba9653. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02101054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8066122860593036ea4a4edaba97bc76713109b16263cea962d9c795390b4ba. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602144265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba42af22b88acc1cf81c2d783cd6eabd7fd3f4660bda586c88d28cf4d915fa92. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2229229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958de0e3f01d8c1c9a8949d039377bcde5e67bf8b0910f423cac50b9031511b1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2232754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae4f65cb16e93fb157870c5caa2ef2ae6bef8bfdb12930b0e78a9c1cbedc8e7. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2232755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1419dc92fad40a0680eee521943059ab8fa1fbafc198a657d9b6c769b18606e7. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602204586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b48025ced192b9ba2b58df8bbe269f14e82ad7df00949b92d36d3600412ab66. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602204920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafb02904103fe89f87d890cc5d0f37749bf4dd65d970072181c2b16530503a9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602301318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f5196b1229a179e579524136439ed294a37d3255bf3da3fb28f1e6f8133ccf. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602301613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafb02904103fe89f87d890cc5d0f37749bf4dd65d970072181c2b16530503a9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602301318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1419dc92fad40a0680eee521943059ab8fa1fbafc198a657d9b6c769b18606e7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602204586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7919323e24dad692a32b5deb6a52786d5dd5af9688d5ab49508cc45cee3de8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602303822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0214371ab949fb98e0adfd8f8f84a0657d1b4c5718064d854d0c3fb1258ad72. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602308592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c9a8686106ac36b76a29df0618d983ae75bd2ed55dc986de86b32046c211b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602308593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412f8b9d205af8fe63304567ed9b60bbdd9fcf6e1e17504e65a42eb85a0a9fca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602401363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf114cf8bb0cb97dcc91d4f82950cc9a207a50abfe3f7d64b830d35626deb9cd3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602402684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78522f7836eb13d5de8c5ef7daedf76885ef5be8c2c6b811662fc7a69d0866f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602402685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1cd9d1d366f2a047cbbba4228431f9cf3974a78624f56323c884e03a4cdde1. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602402690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdab9e7d43dd3d57d80b43284e0da82c85158d5d914b2639b918b4aa5dd69556. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602402695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23fe65a3f4b8421bffcb5943d201d56888a7f7a4aa12f3e41e17a1289fe9302. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602502036.