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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f0fb35895f360e21412005d87ca8d8d8e857e84de559dc39ba77f8ed9c5170. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f851418-b9a3-4b50-8a6c-853e90cb59d1.json and https://artists.proofprofile.net/proofs/artist/1f851418-b9a3-4b50-8a6c-853e90cb59d1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b158878b3f1b28ecd63f0a04c239df7ba4ed1b1438a39a5028c6794c722e2b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:23:23Z), 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/TCJPN2000536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecadccb915a06ccf329a96a98df42a00f4539150e8f281a4698427901b5613f. 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/TCJPN2000538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4025cb0b979cb63772bc19249becfaf25038454d30372bd004730522964cad9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCJPN2000539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9575bfec36a13bcbdc002d57e9013485326e6946a9a69873168d7e0f14bda57d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:16Z), 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/TCJPN2000541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157389ace09a7c90f503c2da2a02e20ccb29e447c79fd2828a75e19d7ca731eb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCJPN2000544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676c08fc005e1611ebdf49cffd8b1b00b8239c625d8b432c054a2eed750b0d09. 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/TCJPN2000548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b0a6e724dc0b3df15ef7850048ff530dfccacdeb5711299ff38df92270f3d3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:09Z), 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/JPR502200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9aa994ebdd3e04df69b935292884e7847b34ba1537ec6b3da74f63219ca3b5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:51:38Z), 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/JPR502200631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde53c472559e1d405c46641ac4d1c4a7048ad91cea66eb427a6c18b1b1e13793. 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/JPR502200782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91d27833c03094ff9a42114a1e581a801227889a3cf4f85b59a82d58e51bb7b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPR502200783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b0a6e724dc0b3df15ef7850048ff530dfccacdeb5711299ff38df92270f3d3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPR502200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac71c7a6b7edd1e75924c38f6b2d5900e5f6c059e75faa44395dee5148ffe9d6. 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/JPR502149405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683171c9f777844b48d9dd9579a8d4c91f01f56be4814ba802729843f91db23b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPR502203588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c08faf5c2c2a4d1fb164846dbf6d6b1ae17b34c4c51f0b8b77499def669ad3. 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/JPR502203590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc325fa35b7ca79bf2a25e49071cf27dca2c6c2520a754b5464b3f8e5940d3f84. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:50Z), 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/JPR502203592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfbc203b4ffefb704b726f82f34a64daabfb6d83b00fd0c0b346d614acfc760. 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/JPR502203595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5a3801f0cf1c6979cd81fb07e9cd77d93e3b472a111a4ed9da354989517f94. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPR502203596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72d33be65998beac90c4ca44700f8521cd26148eaa9c611befd0ec274795603. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPR502203597.
アニメ漫画研究部の姫は俺のことが好きなんじゃないか - Acoustic Ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cf8c4e0a1a23d010cae834e98f40745df9adde3943aa039c9a1d8e5287ffab. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPR502203598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0415c6b5e2d9289adbddb28fd01bb445c278abe1e61d5bb3c26e093ac9977cbb. 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/JPR502203583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3054d533b541b20c4adb298b6656cf2f9cdadb886b2ce2b6ccee15c004ccfba. 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/JPR502203584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5203c92c24d2869ab0906e94a27980dd2f2f24af95614018b2660637c8b5b194. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPR502203586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fd1f9d52d8989e7df4026bc2760b945662799408563762358b20d0bec3b486. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:04Z), 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/JPR502203589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace2dcd5acb6b23cb02194fcc538c1cebaa0f488087bbda734714d850be5da86. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:43:52Z), 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/JPR502203591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda52adaeb1b121d4f3c9b5d984f386608f2163f2e19d2e3312cd185f4d5716f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPKI02311504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ddd57a27ad7af66e938bb0b190c8e94bf4ccd745d748993dcf65ad7148ca08. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/JPKI02312141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129aebc961fbea896af664015f6adb244177117d8498cfe87e98bd259b60791a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPKI02312142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b99e8bea40a79e5d2ca12b21575a0d5d7174104589b6b288932584272b8d00a. 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/JPKI02312143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3656b2802ed2f86b16f23998f1129989704406250ab8f6d4c1496ef86bbd0a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPKI02312144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0479100ef876a92a7dcb83de01d0ba6128962b7bea8189037825b8a1d908f32b. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/JPKI02312145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32a4ca77af82d7ca4426360cd4786d99b293e6831f9188566cf7a04aedf16ff. 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/JPKI02312146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aef7402bcae7d54fbf1a44377b55fadaa0b70a0c3890457578f7c0f9cf174f. 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/JPKI02411833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f42d5f97c3a8ab35396feea38c81ac948552bf0b01dabcb8131c16b1d3f6bb. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/JPKI02412539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6a8d4a3284e093db1bf9fdb43913daad1dc36d15d38a25901eeaf45a211b41. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:35:12Z), 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/JPKI02412540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70d9accedd50706527d372828b6429f39718620b73eb41d23ff8590c29d1ad8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:00Z), 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/JPKI02412541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2887f1d3c82b8bc2d0b3a6161ad25b9f447132e5f6504dc27beee158c80d75be. 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/JPKI02412538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5b7afb19790e17d821cc28e293af67322c3a754412cb57981ef9d8c8fdcc71. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPKI02412543.