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 0xf1b977a39956ed281deb78cef007807c2c2b448513b772ab51770f5d1ee8bae3. 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/c5b14694-9187-415e-bec3-9f72006c6528.json and https://artists.proofprofile.net/proofs/artist/c5b14694-9187-415e-bec3-9f72006c6528.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 0xca5d6756bad425d2178e6a54ae386c2889d4860dffb00710e92ec1b277ef543c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPS801600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe421a15eb2fb9564fca7e74f6b467783ac85921b5c7aaa5c88d9e8d1e0f06d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/JPS801600240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963d5b592abfc3b7ca4781caf3a1a61ed359b305dfd01f25207b2c9d38200ef1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPS801832780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703bac5fdd3f9ac4c2b462644485d88221653db95bad59c3a77af7b63ee12b93. 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/JPS801832781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f330e0f8f3b75d66e256b129bdd5477f43fed3c41532b613cd1040dcf05ff4c. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/JPS801832783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3e71ddb0925efa2af57952b6b6b85fd1bc6907a8e4ca73fd92265fdf5cc402. 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/JPS801832791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc956949390746d7b0eca52f833e69d8af1250f250a8a6ac47490314e76780904. 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/USCGH1965983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5b99ef9495ec7fb380a1b305ce7d5fd2a90dbf77136b419aeb5a435d8d5639. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/JPS801852895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c0d5f694a370b9e407d6f76eac2baa06bf261b70bb54c863058e392016c8fa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPS801942145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277a22921b2d6160e0e5d57c1f34e623efa9117b4a5a4c90a35293ef5c24ae47. 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/JPS801855688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a7a96a74e15a16ce7a57eb8090b7a6f36f3711b3eac77e2a416f9735a522cc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPS801855696.
星とレモンの部屋 (Original NHK Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb989bc89092b3dcffe7bb6668bf7dc15ab3399cdb370c4edd75f1905d767631b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/AUBEC2117395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9510143d090f4e2e8f8e5ffa3c622ebfda9ee16e93d909d03b03040881f96805. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/JPS801957411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4833a19b4eb6e40d56ea9f50643be4394cd08c67fd978641f42358701281c8b. 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/JPS801957417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f2ddd743fdcc63f72b0bf4f7257f8ecde8a736b370fb19d430c380098c6012. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/JPS801957418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be170e119d307b33e0683b7e2a6e59a6d510de8bd018996bb9df884bda1f60e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPS801957419.
生理のおじさんとその娘 (Original NHK Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c4af4dc59442e14ef5fb975b21dfaad99e6f53e1423f159f2c3e9368a6e36a. 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/JPS802355643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e355d674d1b21c9b622cf380e35b2f0205bc01f341f810a979adfdfb6ef3a81. 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/JPS802355649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eea0031bda00996c7c3871d8df2128107b62049ea22364fb6e6088cef4250f4. 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/JPS802355650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5b99ef9495ec7fb380a1b305ce7d5fd2a90dbf77136b419aeb5a435d8d5639. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/JPS801852895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f9a73a9365c3e90d09aa58bcc6b13765de1286fb464976d32b9c6d3bc03074. 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/JPS802356713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165bb565d84f196d0b9a45691a8499bc629a082820ba99ec0c002eb05cdeadb3. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPS802356717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f9a73a9365c3e90d09aa58bcc6b13765de1286fb464976d32b9c6d3bc03074. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/JPS802356713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e022b55aab21a516d42fdebfceda515b6f3e31f9abeb9f792520ceb1261253. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZMER2189650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3351ad470cba42fa5751189fb2413c47ca28c49926f0ee02cbb2396760d6d6f3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPW562108470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233992d995ac30ea9bdf10dc29ac8bf8ed04544b9d395594b2ad4e4b65b3fc16. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPW562108473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dc19b67f9c670b11ec9c281c3c596110e14a3a28df6f594e1b9e60e69269e7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPW562108474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6ac47b2769d72a43dc1ef9a6f05a9ab76ac1fdfcb507676129d69a458d97aa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPW562108476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ac1985980e0e1adc13198b833a1d46e79fa7e89904518186819d1e9acdce88. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/JPW562108477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eeb61bcd874a1a0188892e6e3278548a354d3c3d5cd71444a389cfd9466d3fa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPW562108479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3ff8a6e5c359554f5c75f77025f561c06c4c1f9b983b70df338c3bb21d84b6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPW562108480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594db735fdfbf0e0b7cff000ffeab67c81f89d42d5cde10ed2949debb4910f63. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/JPW562108482.