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 0xfb169f1fe57b04d5c2a9d04601ce4bc4cd841e9c606370f7e1644f0c6d4be370. 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/9e9ffd6b-6c55-42b7-a9c6-044a2e91bff3.json and https://artists.proofprofile.net/proofs/artist/9e9ffd6b-6c55-42b7-a9c6-044a2e91bff3.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 0xf2fd0550e9575049b6ced279f20f0c316d97c2d3c246b885bace20e1889b17a0. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPY200101528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f067d47000f17deb254560d85cd0ab52c2e18fa202c2f26a000503222b1789b. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/JPY200101530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0713a2d2dea151580e3d3b7723b7e9be89de043c3f8719a7c5240516d880aa. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/JPY200101535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9792721de28041f851d7a4f371af71228927934c67939f9d750500098f9d507. 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/JPY200201510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb62089e72dac32e828fce5e061c746174166f8fe3326eedfcb816c3588b3f3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPY200201518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5042c6d8284df89009ec61d40cf509c91a75e29ce56387b071eba9fe61f52ae. 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/JPY200201520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36613328c6dc0ec10645010b02f43583c5dfd65825025eb37cf1722ba595c51. 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/JPVI00521770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cddb086e89c7bb1364b23bfc9ff3559d2013f6f7e93f6b02c692136856dae1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPVI00512770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26702c9ae84377314764f2e8e90cc45b1b463cec1cf9e6891e6ffb39a06b774. 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/JPVI00614060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb80987f2dfc0b1de325da187d45af1b440f042e2c7cb5de1d622b221536850e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPVI00816850.
BIG GUN / 炎 ～"Outer Works" Special Online～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda931a3f4d80b03268a2dffaa67bbefca5a225538d5812937f7ff7d8c77a71a1. 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/JPVI01017010.
RUB A DUB WESTERN feat. BOOGIE MAN, VADER, ARM STRONG from ラガラボMUSIQ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1421249cd56cf28259a6365fcfc1076beaf5586915a59e54b1b4dbaa7ff5fa0. 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/JPVI01017020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c45b104a92721b2398b7aa87290ce30b0b93a167192007b4a81116eb60d2da. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPVI01017040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c16cd3b0057b7ccf763afa7359928142b465a82207d1a711928c0d5dcd7369. 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/JPVI01017050.
NO WOMAN NO LIFE feat. BIG BEAR (Album ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c76d828dd8a2e39c064d6f1152472a74775580391f68929655857305ec8297f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/JPVI01017070.
ONE BLOOD feat. NG HEAD, PUSHIM, RYO the SKYWALKER
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc310cf15f62f93f5569661be8fea8339926506972e6640bfbe0a9ea4904d1d. 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/JPVI01017160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67631929994796e89b74a99995b3b11be50ef90e7edbf5cb5b40c9b693c1a6e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPM551300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b63c64a48eeb145b0bfc889a9d9d4df1207d6be3fc05df983c52602f898466. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JPM551300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59275ae38a2a1bea3464cf605fbdb33cc236ba7c29e711e925ee9263d81007de. 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/JPM551300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f876cf4dc7ef653c822234320f3b27ac543f7afc8a5af1899761acf8c87ace5. 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/JPM551300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0e68d50790d52a2184b3414fb6a41e0cc52c6017994a8ec65d495a80afa0e5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPM551300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87f468ea0e5e16fd2045930dcb78b9b21cb83ecd3133a18f4e9bc91187b43a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPM551300076.
エガキカナデル -mural10th anniv. (feat. HOMEGROWN, JTB, PUSHIM, RYO the SKYWALKER, ラガラボMUSIQ, SHINGO★西成, EXPRESS, 寿君, RAY & NEO HERO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dff0a0fbbb8bcd246cb1d7b1bb4e6ae5f29f93e4ead863d9ad8f2e8bcc9edec. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPM551500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d9346a71b3782c6a17bbd2694bc9335e719c5464a8c79018fce12f4efd4e8f. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/JPM551500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda416b48092325702f85bdfc77af747e182c63a9e7fd62e0448693d849e626fe. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPM551500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4382b9324ccea586cd02612b373de5a691ec39bc0d6c20cb75d401baf4e2ffe3. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCJPE1697575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc035d442c2e76e646bcdae89869c500b338fc46838456a0a24c8070003bced02. 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/TCJPG1737137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb43a0c40efbb3cbea574dfefbff69aaa0722a3667b1002a5a8aa4c8d7833a7. 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/TCJPG1737139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1581a589903ee076d4c2affe7972f23aa4524441934832ccfafe4ede4cbcda. 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/TCJPG1737218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233ffa141ff6c64ba4742e42c29ba8c43e8f39eecb4651b784403b21c2275da7. 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/TCJPI1821425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151e8e92d3839238d72567e094cdeb38534b1af18ca6e67de557dc35a333ae97. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/TCJPK1903391.
ULTRA 7 (feat. JUMBO MAATCH, TAKAFIN, BOXER KID & 韻踏合組合)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eafd00f9c36de2b79b43343c9c4514534a6adbbb5aa1f07857babe330fdb12. 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/TCJPN2018000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaac56c73b0ca4a71b3580a4f2238fc8374b11dd53a288d830f3846041582191. 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/TCJPN2018023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827491e998b52d6642a8625afc5f95464e71fab2098e914201402d6d63f8f1d8. 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/TCJPN2018035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3246f1b2433903ad2481124c29889ceae69df582cade7e7efb45c02626abfd48. 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/TCJPQ2150631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9963c2b466c91dc0096ede0543246fa104683ce7a2edc4dea3076a689fb60ede. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TCJPT2294857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c198e2c6c9be07ebfd8f87a81e4f64a13cd11e3c714110064153da79279d7df. 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/TCJPY2336709.
MORE LIFE (feat. BAGDAD CAFE THE trench town, JUMBO MAATCH, TAKAFIN & BOXER KID)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db28b89923685ac4a34dedcbfde50c5d6617bf817afc2067e669970eead8419. 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/TCJPY2336752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bc0bb1c033bcfd7636383120bfdd137622195acc04ccde05f31991fc7d8a3f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCJPD2402104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d49b12af9b963297ac875cf8977e9d78a7895888c2623739b91776bd37b2d2. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/TCJPH2547405.