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 0x357104a6a1fe312891abdc59e77a5173da9922352e56e49206bc1b0f39c31ebb. 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/20cb29be-d105-4683-8fc6-86c690ac4c5d.json and https://artists.proofprofile.net/proofs/artist/20cb29be-d105-4683-8fc6-86c690ac4c5d.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 0xb1ccbd094ce9d549a2e693d78969ba5602f6444423c1f6bec4c654d39e21cba2. 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/JPES00501442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008c5b4d7a9f1aa473989c64aad09b92af23641481cf5e28b28c40c9c0cfd3f. 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/JPES00501341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f7c1a6092ecfbbe62a3a99fa3e58a20f90bc65eef19c72227481317e97762e. 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/JPG100600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b49b92f669ef5b3544324080f6cd8dc6b7f67319dc3c07644d4b1d1bc04d3a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:33Z), 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/JPG100600129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7dd7a5ca2735293398bd57d37f49ddd0eb269849c9040b48553bb7a3a1e391. 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/JPG100700234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d34cd5062b189ff49f9d101c173c02b1a49db32b9550310b0135f19de777f52. 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/JPG101100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb1f865f2ac3053935de4cde8cc2127ef012595617831fc3f8ced43778c1c31. 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/JPTK01904639.
Neighborhood feat.SATUSSY (韻踏合組合/CHIEF ROKKA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550664da60ecbd6edde09df5efefb6515181d7f8a4542affd9f99e852bc2c863. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:34:08Z), 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/JPG101343206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcf3a13da12c21d8b89c69ed9f2b983c00bee72e1c3a4d857149251126a5081. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:36Z), 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/JPTK01602690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3065356a86a46d3014bd07bbb262183a3850692107119ebb0095736abd2f2a67. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPTK01602720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc9e0267bf458e01a223c60ce0304d3284a1c80c2a6fdabc2562b08afb52b4. 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/JPTK01602770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923ab015e45263015aed0d7027858b9b64e40203774259fb9f3b4a3cfd4093d0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTK01602780.
HOT COFFEE (feat. CHINZA DOPENESS, tipleso, SAKKON & BASI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3757755f63db4ec88466c904bd3d669ea19b19daebd3d31b0ba5d30927151ec. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPF1795665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d21718c41c647c05de920dda9381a8687d4d0fa0dc7f19f82e6903d4c6ffc5d. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:53Z), 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/TCJPF1795667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32645775c6ffb65b95e3b610b436173d037f3c67581b3f71f25d074f00d892ee. 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/JPTK01705760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba2addccf3d14e41c2f2cda79f4a2ba055c140f0c192e2597ec19a68c48e3e2. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPTK01705810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab381d2d0a41ca0ed0a5b621b206d635c249c39d1a3c2371401d6bd5274a066. 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/JPTK01705820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89345445e5a41230a7a82f540729f8d64359d51bfc7f632dd125b63bbe0dc38. 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/JPTK01805010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c0b580bc8c45fe82dbbc3eb4a7f3acc1a5baff028e5af2daa1535f81c1f00. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPTK01805040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5296343e741b7290079a05f366a8bdeecfbd2a488475d97f83f2ad70896920f. 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/JPTK01800300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503a45b89b03191c0778746a7e895511fdb60e13d5433234efa10494ce34f5ac. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/JPTK01805070.
NEW ALBUM IN-FINITY RELEASE TOUR 2018 at UMEDA CLUB QUATTRO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e1d39473f610d05a90c2a89e3967f4286c8c1b921a8cfb46f30a021cd39ac5. 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/JPTK01811130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393e37a999881af556144b526a2d470f6e2f7d2e2517b10f32683a179fb68a7c. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/JPTK01811190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9ed833016dfea67c7eb36f5cc9c9dae9b9fdef57e23afda7364b6ca8ba77e6. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/JPTK01904240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d547138af8013a0edf60a26ce970ce12d5694eeb0551735788af4728130e8ac. 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/JPTK01904250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec0582fc1118acf2b4735417b228f5eb5718e6d4b66dc67714f1c32ee38d3a1. 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/JPM792002559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc393cd0a9836c705c8ec8e88f504ba2cbf463fe320510f84ac9e1f7e64b903c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:32:38Z), 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/JPM792002822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b209ffd7c71d850f7333d8eb95808aa1dbf5318a4ea63d610e5c9a59b14d25. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPM792003127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82b3c5126ba924d80722a142b267e62b7da2c166e94d0d74be621428ced6393. 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/JPM792003128.
ラタトゥイユ（それ知らんメニュー）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd086c51aba0344d34c2588983ae4fb52b965d3b5695a08fe4db4631563f3b339. 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/TCJPT2208848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b33c5b56c89208bc60edf992c040690077b5785af4b0f71565f4e55e31475c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPG102301277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c9d658eeac3dd2916f4f5d68bc5235b984cd2e34b07d8bc8cff741d2087efb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCJPA2408625.