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 0x20b1e0ed45c53660997c10275eab159ca6f82eb018a3b854d13510ea7ec953fc. 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/1c30138a-b9bf-480a-83de-537f77fb6078.json and https://artists.proofprofile.net/proofs/artist/1c30138a-b9bf-480a-83de-537f77fb6078.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
華麗なるエレクトーン -ザ・ワード-
華麗なるエレクトーン -キャッチ・イン・アリス-
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 0xfe77b044c3c6d790c0cd6be9eabe7a30526855d34e43d900b34de3e0d2432397. 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/JPCO07478840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0190ad65b909dfbcdd6ae6673f22e63b1849d3d088957b68bd23bb15c3d87164. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/JPCO07405200.
アイドゥ・ビー・ソー・ハッピー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b257bf769f8a834d1fe3d1d63fa4769e978650f5ddeefdb3870ddc724ee49ad. 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/JPCO07478850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0267036ab4af01b42e1d38c7af50716dbe5eac07d62c3dc8d9acd19ffe8d9e7. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPCO07478860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75af533c14f9610e05199de1779e7e488d7e98d282f085d4b677d56c1667aea. 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/JPCO07478870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae16a38637cce24a6e80d11cc097c3870f219027f16b8a5eb995c09f51cd027. 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/JPCO07478880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbf55f34fc5451b2d9907a493b114120d20ce6b115f43a7d745980971d1b7d8. 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/JPCO07405210.
Special Sound Series Vol. 1: Catch in Alice
華麗なるエレクトーン -パセティック-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c79ac07310ed38f5c92cb8e9070df741514131be6f5d34a6739b40a6c056e1. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPCO07510280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb886844eed51033a07ae9602315a03eef59702ca849963962a206e274e091a2. 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/JPCO07586160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5845b0ea603d136046e83d8d5f32c450e43d392f51cca1d0edfdbcffc99e52. 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/JPCO07586170.
チェンバロ・コンチェルト 第5番 第2楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0b849c535b94c6dfce15e256b10f94ecf64a4faa4e4836927dccb91cca73a6. 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/JPCO07586210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8581360c3bb6e3aad368f973581f54e70723af6665a2f7f7337350af798b6bc4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPCO07586230.
華麗なるエレクトーン -サマータイム-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918737ea331132e513c434e23ca701cb387ac1aa48d2040bc8839000a1d0d553. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPCO07689980.
フライ・ミー・トゥ・ザ・ムーン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc306ccc670fe67758685896f7134f58333625b45a584c7e317175bede7db67. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/JPCO07610060.
ジャスト・メット・ア・ストロベリー・ラブ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e31425a57c48afe6ccb1477bbe3b45a76d78ede417ab5b0091d0c5c3c8fcf72. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/JPCO07689990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd08aab20affbcff63a2f1cc00f1c116cd75272425bc9c4b90ec5c0b496ea39e. 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/JPCO07610080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb435d9ecea79a56a0179a00608704acf3dbc2068dbc6bd65ed8530702f86aa1c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPCO07610090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22e703b2a906aff25b75f438c89aa9947f2945c9f9082110bae64972e39ccc7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/JPCO07610100.
Special Sound Series Vol. 5: Artistic Electone
アーティスティック・エレクトーン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4554a40fc3481763b69ffba3e98b6a7d869895ceec706f296d55adac755c33c0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPCO08506260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f9b712c88d6e3ca33e607a47133b16a9786d6169d3375a4029067cb745a1e8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/JPCO08506270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88c89e390295c1398742fae9f36e1c71f98dadb3aaf83007461cebb094cb012. 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/JPCO08506280.
トワイライト・ゾーン〜トワイライト・トーン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19b911fd5057dcca6576a1ebc57c876723ffe13df67c3e29dfd894f971fb7d1. 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/JPCO08506290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e2c831bd003297c215b01fbcc92ec380637c050ab4e8586b19e9fac0377aa4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPCO08506300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751d9d03e70b1cfd6363eeeb68dd66f4b7cdc31eeb12fe4f5c9d5b0ada7165c8. 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/JPCO08506310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b76dc1bb7ff76e729c5e84984e56266cbe766d9c38855d3a61f413fa03660b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPCO08506320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5d8631513d375a9b05e11587527c0e0c2b6347b36abed661923a4f7dc9ad41. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/JPCO07610030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21fb45fbc1e6b37e65b9a30e0e8af84c5dd89fb795315d6a35f78fccebf9bf4. 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/JPCO07478910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ca93024fef360c5f9ddf752472bd74a2b9a2b06e6338e06ebdbf60db9e71c6. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPCO07478930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae16a38637cce24a6e80d11cc097c3870f219027f16b8a5eb995c09f51cd027. 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/JPCO07478880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ef1c1c1a0ca705cd39aa33361807f97727028463af7bb8482d9716c7e918b9. 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/JPCO07405280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda24ad8865e4d0513b3d005bff37718378ca77df3c1b186feeb5a744c3963f93. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPCO07405230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f115a1a4ba3146e412aa66ba49ecb31c7447383b0715d9dbbc8c2de1ab2aa48. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/JPCO07478920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd08aab20affbcff63a2f1cc00f1c116cd75272425bc9c4b90ec5c0b496ea39e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPCO07610080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06e7c138ef87a9963f909b2704a43526b8e049f279b06b614ba4bd5e7a58638. 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/JPCO07610050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8c55c3988ca2b29fb16e78e5c3a538199b1fa5d183996aa2a03593a287eaec. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPCO07405260.
スペシャル・サウンド・セレクション -ザ・ワード-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7a66a35f99100837a87ad269fb7e2327ec8fcfd41b4bf5edf1fdfbdc224c0c. 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/JPCO01823570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d3acad273cd6a0ab8301fe6e86ac914cb1299b57e68e9d07688b7eea65176e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPCO07478940.