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 0x7372c8284896c9be0b6c2ed484b75596f8fc6c339115bd660364b106b19a7961. 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/df3ada8d-8a1d-4431-b8dd-1f1756643d13.json and https://artists.proofprofile.net/proofs/artist/df3ada8d-8a1d-4431-b8dd-1f1756643d13.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 0xc1585115aab8de08dad148eb2e10935f82d17c3b7473ada4d86851c942bdc761. 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/JPI101200677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2ed76b5444548395a50bc0b2261f0337fb01da4e5ff219c6b8212bca875f28. 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/JPI101200678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36a719a5b89801a52b165c8e613afd7fa0c78ff536567b5a1c1006be0cdcd37. 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/JPI101300943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0d72f6ea6452ed1856e2870cb99416f2bfd42b98c551b0d5280deaaeb1f365. 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/JPI101300944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce20ae0ea115f8cdd0d36aed5ace2a0a1381f5675945a44ab75caeb12f9045a. 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/JPI101400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e2cd07b3cb2bd6e2be8c7a6a0dd48d041648c30b283203d7b4878a57cb6be5. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/JPI101400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dd23533fa3bebf69936d504f4a7ac4d6d2344641dec1c5068ce18665dcd379. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/JPI101401516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc9ac1fb61ddd0854b838cdc25e67b3bceb42cd9baded2d3a06e8e31fbadec1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPI101401517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ec5ea3e834d08d0327e0332f6f6700a8075fe2212a462a0416950fa71e828b. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101501941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c5b4d7c0fb2e08b987a35ede764a7175ab0c7177bd2563def04b110de95a27. 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/JPI101501944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0addceffe4329717f5713c7dbc8c7add3de6a7f99c584d3f86431b71d6cd73. 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/JPI101601106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc26a620ba24599da62a4f758b57c6e47b8303d59f178c38d0d57a5ccd869f3. 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/JPI101601957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b873c3fe13017700dceb0eb9b42ee59884de1148306454d22111754915e3b23. 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/JPI101601959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b2d4248d2eef889b0e22ba56b68161d3eb39fbef69d1c4862cdaf42d06834e. 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/JPI101601961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15064dffa21f586e3e556a49ddead2e6cb9bbf1b7982af16e2ed404f2dc6d4de. 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/JPI101602743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42820e7d604fb678c9ac8233b2b2becf943f56a4d1b0ca5238c27ff327bc099. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/JPI101601964.
ミラクル☆トレイン「エスコートボイス 築地市場 遠哉」（CV：岡本信彦）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ffe858ce8973c2206c6ae894259f0943d87d45c989d3cdf83bf8e0b23acfe3. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/JPI101701466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98363de636fe346ed09ba0f90ff15a73e84ecc4d68003e37e704388cabf736a1. 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/JPI101701468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f74a43926e1115f03f2e5f46998a9b79cb3d3d0ce7b501ab4306caae2406f17. 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/JPI101701650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9d593f9ea91e466b689fe1db3c6a4f81375e062900a24107e93895614973d0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPI101702087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83b01014a4f5cfe5259711af2e9a05624b865fb30e2255896d297c142927305. 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/JPI101702088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33342b09b3b61496550be0a78f98d290df335084a36938ef3e28342448675542. 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/JPI101702089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907ced99d0d6f9ba80ebfee554fc7a31692877e4574e6cf8d303eadf1e181065. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPI101900981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf2bc5d67844a869c7daf0db49954d8b103886ebcd224c69c732554b227bcff. 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/JPI102001872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2b40d9e175ee9e70c30292605379cd9a69cfdd9a14fbf3fc1f03597838d085. 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/JPI102001873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c76a335afb4f9647616d66ac4b72e255d972c7fc6d00c28df082cf322ae6f6e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPI102001874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c5a860d4577cea30e353e5c847e989e152e5300b8a11fdd67df00f978b2d54. 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/JPI102001877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7c3e82768186722bc770884b1f983d7fb521a34801db1d83f80c5d07cc7a99. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/JPI102200603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2814adfa483e1224ff8514f70a27d8a00e99dc02f41d30c0123ee60b00380dc6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102200606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c16b6924756233dd906b2e42da61782961061af8d0a556785eef93c10b0b94. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPI102200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf824d05176ac326d0c5e65cafb4681f15874865303366a3077d61295913de0cb. 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/JPI102200609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd54308c65e965320d1127ae2e5d57904e2adb5928fa87da1e8c84ca34565797. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPI102200612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cbc2703840220a43f73e995892c15f23105832bf208d2a99a45170fafed072. 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/JPI102301106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea5b9d826f9e64906238d0fd9e752e6b7e9f636852013a5701a9df99d9ec3fe. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPI102301107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a4aa31a38fa653a920b3c7271a5ecd8515582ddcf3cb0a89f5d3f29108dfa6. 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/JPI102400826.
CALL OF JUSTICE - ☆Taku Takahashi 超東京マカイゾウRemix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6ea67b57f8f1b64e499919bf01f27208e55f7c92e4cb1618f269f7e3ea0b3a. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/JPB602204763.
[Re:collection] HIT SONG cover series feat.voice actors 2 ~00's-10's EDITION~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed0a757b53a783f4a8ea87dc76aae270fc28b8918e9ffbf06ef8f1cf88e2542. 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/JPT552400393.