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 0xafa85ff7b59abb450785764f53804144abab06089d3c5c3f8dc28644b77ba0ce. 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/10a0a42a-7f8e-49ce-916c-0f3bc58f9e84.json and https://artists.proofprofile.net/proofs/artist/10a0a42a-7f8e-49ce-916c-0f3bc58f9e84.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
リストラクション～自主解雇のススメ～
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 0x7db712d38a9e2e00f1746fc0d16615e21bee6ca9bae655881759cad10cc404e4. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/JPJ901510010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442ebba1013b1ada8f998f40e3aba32532d88906f85ddd83131bf37662042f78. 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/TCJPF1722344.
俺たちゃ妖怪人間!〜人間目指して何が悪い〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76af8214cfd3514d04566615d2ac508589582ed9dda76f98aed2a3ae4b64d859. 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/JPV831800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d710801950c590dc84e1cf6d0276ee508f1b45dcde8f795948d3f36d8225122. 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/JPJ901703620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d00636fe031a68832db4e389e97031d2081d50aeb89642702780841d27ebcc7. 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/JPV831800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b80120c3ee7f9029e37be84301def77ba83013e89edb00c715ef0ac28fe6b3. 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/JPS801852880.
『ニューワンマン5〜入社式〜』at TSUTAYA O-nest 2019.12.30
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406e7798337679cff6e77ca8940b14784c9d350618d6ce3ef43a955e99cc2fc7. 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/JPS801951597.
Do The Rhyme Thing (feat. SAM & DJ YU-TA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c2db5e9d484e99d2b58acfa1842621d70c687044f808012fcd95fbc51cc69c. 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/TCJPQ2158356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67ffa19d44c10b1617dc57b74fdc11bca5fcbe1c25ebcf65e28a2e374e7b90b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCJPR2214784.
seitennohekireki (feat. T-iD & KEN THE 390)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001320e74f9195d5f35988be18cc0d5ae24ef127b4308b763ce95c260f137833. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/TCJPD2550844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fa6a78e5ccdae04728cba43a6540d9d40ad0d17b72376cd0c07e2180c6cf08. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCJPF2596920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088ba956f04d4f0767d8bf552eb092463971e395198e2c27bf6bcab0bd69a501. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPJ2554902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182cf39b0c83c19907cce474978e5614ccc7d85b0b160211a17a8d74c8f4a9a6. 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/JPS801732343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0412e433074bba10d96b89a530d9acdc7353da6dd95ffefa66dfa0348f6c2b. 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/JPPO02403489.
TAG S**T (Track by dj honda) [LIVE AT 暴道祭, MAY 24, 2018]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7c7733c0c4aa475b4eca9353630833a1c5c52552a8ce8865122d91d03bf7e3. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPS801836468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4364b987830321bbb2c16b4f82871f2b823caab8ae92223fec06df247ad260. 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/JPS801836469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182cf39b0c83c19907cce474978e5614ccc7d85b0b160211a17a8d74c8f4a9a6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPS801732343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e73f6bf204c257e48916c876f2c142a9b778a9f837ccfae14039dff21da884. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPS809915025.