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 0xa050159f08d87b44c4e9aee6021349f1a2a9457a3e9ef5fe8bc6b94a66410c15. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e96b3fce-f00a-4b41-92ad-033c255a5d68.json and https://artists.proofprofile.net/proofs/artist/e96b3fce-f00a-4b41-92ad-033c255a5d68.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 0x0b8f231aff8b78dcb23fd06a7ba12d27c47454a3d460e275b9ddf13e34bce0f7. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JP92Q2302029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827fcccf6d065f587a34da2eb3cc2e8ba1d1103f9b91943b7b8fd85b0705926d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92Q2401215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3720d0aa80a17ad6911f42c8b7bd3de85a088d682f7aecf04a99aad91fc6ef7. 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/JP92Q2401202.
女神は世界をダンスホールに変えやがる (feat. 夢ノ結唱 POPY&夢ノ結唱 ROSE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ee4d9896a106d3e6a4f41ebe5f210ebd4c6f78a48f562e096348d1309aebf3. 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/JP92Q2401176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4873dad3749e4d37d999fc338489531e6174853a14fb05aad40d934f750ecb7. 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/JP92Q2401216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed2fc2c39c348106a0c97fbda5e2c389a90530d84db93cd1db833d77143e512. 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/JP92Q2401217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1089b10894ba116f044fc61063dbe052b05129f2e336acb7b39f3f997fc69d. 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/JP92Q2401218.
情事・色事・ん…こっち（Neo adult style） (feat. GUMI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c48376718d05127aa8cebe837abf83334f51ed7954d57d5136f8760f30cbee. 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/JP92Q2401219.
結月ゆかり全裸吹奏楽団'24 (feat. 結月ゆかり)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab45389762287d716b6162708fef34b0ffccba1f6de9c574524cfb451efdb93f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JP92Q2401220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bc18913a107cd4df2ca7b126b929d9cabf8fc80c67c13c4ed199312c61fad7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2401221.
ビバ！ショータイム！ (feat. 重音テト&音街ウナ&弦巻マキ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7943d50658abe0e349dbbea7739a9cda62fa1dd2298ce87a4d009d9d18cbbf. 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/JP92Q2401222.
倍速視聴：1分あれば十分さ (feat. 小春六花)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3174a9c5dbc9c6cf61b3a1a634cfa1ffb43957982f88e02e02ae6e0da1a7e21c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JP92Q2400994.
ネタバレ視聴：ボカロPを鉄アレイで殴り続けると死ぬ (feat. 弱音ハク,亞北ネル)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba64e70691ece84669847b94133192b857a55bf8eacff628f94f2f48f3e8882. 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/JP92Q2400995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2631013f9c4a4bb8a784aa8dc679b4769b36835944080e08d379b44c815d287c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2400996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d28ef2128d5af0202797432316c1c1f02061d30924e3d9a01e12c3a8508bbb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2400997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d0a2ff13b468417396b44cd91714c611154ff77e8c276ba23a13fa802924ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2400998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b754e246dbf74645599c6557a86530b3f4afa326d1991c0d3de37d7a4f5f86e. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JP92Q2400999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f01dad45ead3dbd1aca0b4a42695dbf00ac184c2908342af2f40e9e4e7c279. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/JP92Q2401000.
全日本主語デカ選手権のうた (feat. 弱音ハク,亞北ネル)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4c74b847f1da7a214398d9877f1ad28afbbd31350f964450ee14cc287e8ae5. 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/JP92Q2401001.
リンちゃんなう！Seasons (feat. 初音ミク&巡音ルカ&鏡音リン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d95546a8b4190898b6c4c7e6df34f8da229da70a55fbb4f5de346cc035728. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JP92Q2401002.
え、僕が最強でいいんですか？ (feat. 小春六花)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171e87301bf45a6b490fb2a6b54f06274d7893338bcf8dd9683a0a170aa96f0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2401003.
幻想論ラスタンベルジェ (feat. 巡音ルカ&鏡音リン&鏡音レン&初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6916d9c1b2f51a4323762efb12ea74abd2b4ee52f5d349fd43b5e5f3314059d3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JP92Q2401004.
迷彩カメレオン (feat. 音街ウナ&小春六花)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5b03fe8dd14f3d00daa5651f1411f417be02b0c598095c4765091c74f93d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bc8183250b656d14a24576f378ba71632fecc7f47d0e6e1ff242be7b178020. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2401006.
バ美肉レンくん (feat. 鏡音レン&鏡音リン&初音ミク&巡音ルカ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27c6fef09ea11085d69c428ef3ea7a22f570fed2d9b2906197eec1f9de2ff62. 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/JP92Q2401007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6594bdcad251de045a86e2f8285b9dcc31e0eb68311a173f852afe1fabb053. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JP92Q2401008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d305a2e5bd7d6d4bb9914bf056c33dfa79bc36d6940b07ebbcf64a917bff7c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/JP92Q2401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504e1f2bf1657e6005319dfc5c9c859f26a61313d0759710c0096340710b983b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JP92Q2401010.
詐欺師の輪舞曲 (feat. 鏡音リン&鏡音レン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde7644b2fc667ea5ffdf9e2757f01ccf3883b887a5759c4e2f2c10f2cdb0530. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JP92Q2401011.
自分の曲がクリアできない (feat. 弱音ハク,亞北ネル)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff46ad5541bb9a09999d225d35b3cbf508e21f04d76eeb586053745c7e8a012. 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/JP92Q2401012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70a7b35ac14af10d8e91f7c661252a3dcbf4c680392e1c15cc3d58479e3f443. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2301049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda24ccd715a493c23a8172428bdddf72c9cc516ab5573202095983a66e103b8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JP92Q2301050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8393afda4acd82be19b0cf836ee94d4cadd6a19e597e25624364a758acb922a6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2301051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43140bab3ae6529ebbb7c0e7a031da2b2b7a51437afe7c1873f4bc250831c24f. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/JP92Q2301053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f7284af187c8caadd6653d68847ebfabcee1fc6119e11b788edacee0f3ee7c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2301054.
さよならの代わりにチャンネル登録お願いします (feat. 弦巻マキ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdbe7d90a7dd3d2e29a8a4a83a0108f8400e1edb937e58d70762e41c14eb5f2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92Q2301055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d97eef869cf7650d394463415e2268a8b466f4f90be796ff2c2db4b5ad4a18. 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/JP92Q2301056.
パラジクロロベンゼン×アンチクロロベンゼン 合わせてみた (feat. AIきりたん)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2477bdb510b177dc2f6e4e4fd125ae29d5ca12b0a850596c7777a743ed97d82d. 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/JP92Q2301059.
Creations (Egiharu 5th Anniversary Best)
エンディングノートなんてかかない feat. 弦巻マキ
弦と花、Jekiaver feat. 北海道めろん,miki（SF-A2 開発コードmiki）
さいごはめぐる だれとめぐる feat. 弦巻マキ