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 0x5b57d2662366fec98455d0e8e34ce9c14fbc4b5c9d31a5f31957bd6f978bcb54. 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/fc9c7261-7c89-4b74-8ef4-82704ea78ce2.json and https://artists.proofprofile.net/proofs/artist/fc9c7261-7c89-4b74-8ef4-82704ea78ce2.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 0x5d3dfb038e840c6d6fa3d1de72bd17bd4e43fe2210c365f44682cbea427007b8. 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/JPE560900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29fb4c12fcdcb8e4a9b4edc59dd9096ac279f080acb2727f5d669926efb7f21. 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/JPE560900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8908bad17d2cb7407acc9f8d4021ed4cd14326b9b19aad73f3a4f8e243a49fce. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPE560900228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1584ec32110db19a764fca9e7955326dd23f13afbe6bec49413b641e7205aa5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPE560900230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd351745169c0edb03db2bb500ae7e476faa997ac4f1dd576bacf6957069bb2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPE560900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0914c47bda29f964bd9c37b791c22a53cfe277eafe0ec171ea6d0b8a9a4d78a7. 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/JPE561011121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8646bbe5c09f8ea9b4a117d7c1d00dacbe95fc1efc158763ed2a1ed2fc7e319e. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:04Z), 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/JPE561011124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bc1f519861ad7fcc8c32352302224fb4ff0f6062785aa63f6e3075335db30e. 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/JPE561011125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68b984661c23f7d1738f8e409dee1b421d253584802dd3b997593a2a066875d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:07:48Z), 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/JPE561011128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cbbcbf497d731e2ffb532076a47f84cb47f9aee2695ecfb01c42fba04b1a68. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/JPE561011130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4557057534e515d53c94d230c27e61711fb50a20cdb7f609aa324c6ae17511e. 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/JPE561011131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318e4a9766279e7de90ed3174077704212b33db7fbe54408901202f7319cab57. 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/JPE561115162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2892b507f734af64e97ae46a3f2eaf8d6fd4946e581ca2a09607392a31b79ae. 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/JPE561115164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b97465832bd2e695b74040c08a0a06d0fe11243833b9ead99f744713257d7b1. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/JPE561115165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dd102eb93e07ea24d99fa120cf8f4f50b377a59d986fd483d109391b8572ac. 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/JPE561115169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c452492266bfab384ca999f2b3c13b080d15b2f8ea3c3e43ccd710d47e770ec. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPE561115172.
七つの罪と罰 feat.神威がくぽ、MEIKO、鏡音リン、鏡音レン、初音ミク、巡音ルカ、KAITO、GUMI
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1993345395c4b9c88ec4be9b512992f920195cb261d9d50d9fc8452d0d396f8a. 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/JPWP01570001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e92d75db16c0799bd02aec860dc52805b59dfb45d0f62e0c7e8a75621b56d3a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPWP01570003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6ccb9b2d978ccb49a263c7dd28e86607fbcb5c1248c0f770604cf541158e22. 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/JPWP01570005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0b57fcd308d5ebc49cc2184822ebbd7dd2ccd7950c0578848f3d2de7c6bdd7. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:39:26Z), 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/JPWP01570008.
五番目のピエロ feat.鏡音レン、巡音ルカ、GUMI
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e226fb012323bf281801e04cbd966a92aa1037d42e9aff58a9cc6e9070b5d4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPWP01570009.
野ざらしの首、鬼ヶ島にて feat.神威がくぽ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc760fe8cadf6c0ef15e7b2e5fb529c82d69cb9369a820dbff0715835186ffd8f. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/JPWP01570011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6848badbea898d1d017eeeeee571495fcce4dccfd15f473ca1f01d6367b67a5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPWP01570013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c524395cd4be6faa99de8d6dc0b3f038dd0b524223e97a6b10f71125946c0c7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPWP01570014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ac689b2616845cd63a73afdac05ef487ce991374b9e3817b4ccd4957df1a8f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPWP01570015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7014d59116ab53d1a36677e11f02f5c0742afa8fc0008d4675455daad486e4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:22:37Z), 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/JP92Q2301587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd74442a6d7786435f7102bca0efc1fe7e97221be0a52ae39fa5a7b9ec2b31fe. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JP92Q2301588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dc082939bbf4ad1fd93438faecd7548cb31c201610dffdce597ba27953c052. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JP92Q2301589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0e6a135a68981eb1f85945982cd5ebed8e2518d7bfa696122533ce19e2cac3. 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/JP92Q2301577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8e24881068f2d03a41a2d933299a2882089f2f4fa590ab1e70352f0250c88a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:11Z), 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/JP92Q2301578.
彼の王は泥より生まれた (feat. 鏡音レン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bb9f4e30b791911aef9eb5896c2703c136eb185d5624b1b18341557cfc857d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:07:36Z), 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/JP92Q2301580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedb66198bc8cba90be4d0b5513c254b21782737105483843701223d973b9cde. 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/JP92Q2301581.
加速する僕とカエルのラブロマンス (feat. 鏡音レン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93077ab49b05774192511c6f0d9c97200b2cdc0a44e60156920b6ae3d9795df2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:04:43Z), 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/JP92Q2301582.
Reach For The Stars ～待ち続けた手紙～ (feat. 鏡音レン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda248d91c30b65fbbf6a72c6082aa3618846796568252e43de0add396f9a0404. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JP92Q2301584.
るりらるりらと響く唄（パレード） (feat. 鏡音リン&鏡音レン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9731430210712c82a85fc0ca6db5ca9551a3fa2e77d7cc49c4c2e6b1bd931a. 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/JP92Q2301585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e03d2184404bd637da1b72912a6e2ef798ee6d2d54d53b10a812a23c57eba8a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPE561905766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7631c48beae0d6bd326e908da240998ebac8bd178b77335a78aec0da17d96d4. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:06:43Z), 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/JPE561905767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a57fe008d3c70a79bf96b8b1bbe5431e8cd262f7cb7a5c392211f9e80673c2b. 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/JPE561905773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29311dc4ca34975e4edb763e7f4ea86a957d68d87300a2fe0938f576e35b1359. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPE561905774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959804993ed7c9175c0878eb53d3b5b137d754b17bf392abe07c2cebcdc488d6. 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/JPE561905775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2297058e8394a176f1281778e752c02f592d4deab15fe93a89b1980dec62fb69. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPE561905776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4011bc7303b4915682f0412abf9372628fcc5ae3edb8f599735ed1c3db3771. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:38Z), 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/JPE561905777.
そして少女は狂いだした ～終末月夜抄～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787e429c449dedfbd6a2ae9b13caf40d46f519a3bc0ffb10221f5a440073cf4b. 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/JPE561905759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e2a26b97639ac4aff5ca17db4c967642ef81303e1e5d608958044d0a7328cf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:11Z), 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/JPE561905760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797286f6049483865981a7b7a12cd62f39faf53b124f737a3405437262cc68a2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPE561905761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d499da68c9b5502ee2fc62dcf0b9ba116d8fe6ff9d01e5dc39f186a4b8b2ca. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:03:24Z), 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/JPE561905763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fe9a90eb5d130b7b51b7333b0346de7251d1f1c8b3cfcf4b5e42844b3d5f3e. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/JPE561905764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcb1e6e48bfb46e7c30b94d8503382b5a176ef1be10af76e49f7989813a6c8e. 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/JPE561905765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b438b970d822ba9d2c4286573c49dad0d2594fb4df5bb997d57953cc15705bd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPE562006609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a3ac0789a6b7d4cfcc57929abd395d69e29f94c84d7ed3b9b689a34e90c291. 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/JPE562006610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317bddd5db8eec3ba927d00ba3775c76d27d76b050aeb6978aa36f061528fe96. 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/JPE562006611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002f779c341164367b43ef1cca00698e3e0cf0b5968d172acf9c7c93382b0e86. 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/JPE562006613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8bcc4dfd4ff7e1140f56f0fd12774742aa843e74a1b5a2df73db95585a1278. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPE562006616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b1bc7661fe288258880140934e77898811553540a6c33015ea3e20261b0c5d. 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/JPE562006617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9504c92ed2dbb3be3eadbaaaf7b8a873d05d73682406d5938f9a41dd80cfd618. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:01Z), 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/JPE562006618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8862ad6979718a97be5caa4786965e56c331fe8c274fec1ec9d2db3ceba675d2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPE562006619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a619da36b2210c8bb63ca05d9b0a0e4f4697ac633998098696ffcc9903eccd4. 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/JPE562006620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195a568433a2dfbe915fc319736e04f25f0f9e47c72b8f2a991e5bd64e0d88ae. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPE562006621.
双兎が来りて笛を吹く (feat. 鏡音リン&鏡音レン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8107aec89425de5832c870cf7daadb6a96970842d0df0a251ea2211b85fcd143. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JP92Q2400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe584604a5c226741ab1e2dd8ce136bd32c36d68ba67458434b94da9050235977. 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/JP92Q2400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c97426220298aa9f9cc6ca51aa6eb2ae5ad9cdaede5cab8734e70e1f05eae64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JP92Q2400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa7799246370975aee3d9cc9c7672dab1b10295a448646abbfd10692167a9a6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JP92Q2400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e06d9a31afd01199a490b5022094e0b89d9bd551f40e889ff6f23f1ea1c8ae. 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/JP92Q2400274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97ad7b3dcaea002ca93f746a0d427df05fdd7fb195d630bfd73cf8c9a80cdfe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JP92Q2400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4256e48cd124aaab7deb9e7ce7ed8e18642961e637bf3e704c3dc4c2d4e36907. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/JP92Q2400275.
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 0x289218e65b183c9ed7360be9a616a64a81a6fabda5b13796bb16f585245580b4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JP92Q2400277.
grEAT journey (feat. 鏡音リン&鏡音レン&MEIKO&KAITO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195a568433a2dfbe915fc319736e04f25f0f9e47c72b8f2a991e5bd64e0d88ae. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPE562006621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe584604a5c226741ab1e2dd8ce136bd32c36d68ba67458434b94da9050235977. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:54:38Z), 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/JP92Q2400279.
リストランテ シミテーロ (feat. 結月ゆかり)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ced47cd610cb86f5de8e839e319c790f71a1b2a1b8e5faf7db40c0a345fb91c. 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/JP92Q2401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8107aec89425de5832c870cf7daadb6a96970842d0df0a251ea2211b85fcd143. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:36:10Z), 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/JP92Q2400278.
初音ミクシンフォニー2023 Live at Suntory Hall (DISC2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cd979a81744721af08c387de1e6d09f2c967fd4c5e1b59ce763f2292968631. 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/JPL542300691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bafa81cd4c49a8eb38b906931ff36a906aa284af8b987943bc010646b70af78. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPL542300692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb702ecc783966360b29f0526714045860dc4be75be5855324723dabdde619823. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JP92Q2302035.
Kagaminext feat. 鏡音リン、鏡音レン ―10th ANNIVERSARY BEST―
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f1ec0ccb6ce472b314b8d82494924491dc4ab3a647bbd73b90a07a39a8197d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPC231700362.