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 0xfc8bbb0c75813f1b01a6501c230cbe11cb7ceb26bb3fac52d657d3ae14af87bc. 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/d9903489-886f-4a16-bdcb-50d003c1a632.json and https://artists.proofprofile.net/proofs/artist/d9903489-886f-4a16-bdcb-50d003c1a632.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
革命にふさわしいファンファーレ
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 0x9338fdefa138e4947761d4ff122cec321b40a7ed0fe37ada9ecfbb761fa409d7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JP92L2303370.
ヤンキーズカーシンコペーション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb10981822eda412558d8cb1f37d07d7ef2cac3fc6ea690d875204f01e72fa. 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/JP92L2303390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f93393c96ae8d07f5b27db7143f954830fc3e8d3c55ebb21c1ac4e55b79e2b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/JP92L2303400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cff26044cf75bb940c5a2d520090cc2191690038dd19e0247459ab7bb2663a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JP92L2303410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf41dff655f631ba25269c04868ef33e3cacb5ea0323d06c65bcedffd5f714e1. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JP92L2303420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfbff4b650baed3642a878b980b9f4c85ff1c2048207e85b8292ed85d4c04a8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JP92L2303440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab237db57b85af31c50779c9b7d841fdcdfd689ffe98eefd1366fc1889446ca. 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/JP92L2303450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd306383282f8d69cde6b2f3fb3bb67c3afb2729c63c0863edbd9758ceb0d917d. 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/JPJ901307820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7aedee124b77391f0f27133a7fee9ccbd09de7234c8e3c3c9fbe21e07a5fdce. 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/JPJ901307830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2a230f310207dcf3e800c7a447c5b6e8775a91f651e0bfacd1631ca50cc9c3. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/JPJ901307840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fa68454446dcff918bad273056c0d0c93c51f8b64747b628ee52a25526956e. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/JPJ901307860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce71b94fdcd09650bd9fc0dbd5850ad94163e76031a704dd1dd0a3edef10098. 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/JP92L2303470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec23e1c540f7c87a1f518beee1991c25575941aca09cdad6066999c9b87f855. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JP92L2303480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e8f5fd5e613997ebc3fa99f688952b5857cf6b0a8b0744a312adff5f8e88d1. 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/JP92L2303490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffd38b07ec6c04ae2b50d2853ef35de870ccdcaa8aac81804aba6ab21802883. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/JP92L2303510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca60286b828a935409ce8c403a050cc2f27e0915fa30cedaf279cd5603da6bd. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/JP92L2303520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5991d9b2a6e018ef8ec3c2cf86f016c94025019db0a527225bd613d9e7a19dbb. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JP92L2303530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdc581b412103ae6fdcbb0696a02af1a1e9b3ffee2bfcac49034fb379f6627f. 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/JPA961580018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dd2aaf9b0bf91c2523a85b9d59a85063d2eaf325b0a4a44510f1cce3c05649. 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/JPA961580019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91fd041a2b38d1332115ba16131c9a072f81ff7daf478935dc976c2f8caabf2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPA961580020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8934662a98b0d3bce0aa61884d064033202517476b240e91745c3c61a905611a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPA961580021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0de3eb80494287d0a1bfb0201acf2bcdffc966b2a909be9075991d1a9cb63df. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPA961580022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4e9ae78b5b103e90d85e70be44af784153d111c07143ccdbb6141c57020e81. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPA961580024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2fb913ea06445aadf598faf892d39303958767ea0ebe4d6d21f3a9866c3b6c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPA961680021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de4746f5a0779ee54544f0216f41f3b9221ac80d87d518d1cbbf2533bd102a5. 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/JPA961680118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaaccde60c4b331eaf6b1013127b0a43691edda5cd5466ef2e5f12ed8d3c8d1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPA961680121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd8268b322c34c89b5d72173dbc6f4bd44e552ad961e775a71958852489919d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPA961680122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96ecccf812a06ee044f82e184f52339d629dac9a4a370512b0e47d04fb34ff5. 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/JPA961680124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd1ad4bafc93d1a8605f95439eadcb52ed2e330f273bfd2a7064cdc822c9745. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPA961680126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0dd245ab2d026cc393bf2898612f9c0cbcbc8ba1d477adafc5fe0d2f5c544c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPA961680128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7281a5d77283245b87049c61800b5b722cf6d1a0a5b0f1b02c4d0dc7f0d6e5ea. 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/JPA961880063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71df8006f265dd5dc02fdada610e48aad68c49200f56721923669ae807784de. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPA961880066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293bd5c3cadc506cee9714dde518f2550f910ce068df09127e486168ee0903af. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPA961880067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab433f9e7e0ebb6ac2444bd40e5c1e1b647961bcaee7a4cb0e60da60a8d00a9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/JPA961880069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3c528528b0d9a1ab8ed4ca40165a6c5c745b746527f8aae6889e02bcf36da3. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/JPA961880070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa0980856fbb61f626d223715741761fd01cbb3b091cee2faadae9c50db3b66. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPA961880071.