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 0x5ccce1b39afc7fe4413d30f237b667db0dbcd5afd84335104581163b5e5666ae. 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/d7b157b8-d0a7-4329-b62f-245d27dcdad3.json and https://artists.proofprofile.net/proofs/artist/d7b157b8-d0a7-4329-b62f-245d27dcdad3.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 0x57f2a81d3a9c4d32f0ea6f85c3bede9474055566e4f781aadae84504ba49cda7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPTF00705106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fa0de57585da4fafbbba1cc61cddadfadec50d4fe9ee97799ba4cd376e58e0. 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/JPTF02106302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7f4e988cb73880e654cdb2098052702c35628abc9697aa85f76d648434f41b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:41Z), 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/JPTF02106304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61485cf2b47a8abb96fa5e78077d4053c185be083970a866f3a8cbf76904c14f. 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/JPTF02106307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb78b252db6acc55e0cd4e5c00eb1a3618d1814ae3c86da9813a7e7e073a844. 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/JPCO02329290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f24202768bbe8b7736e2f7b1643d919abb40be79e3550a91a071e7d17cd5a8d. 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/JPCO02329260.
ハッピー☆ブギ - オリジナル・カラオケ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9830f40aaeec0d5288e24aa10d4c629dca40e025b8310d0c48b5efb9c717fc77. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPCO02329269.
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 0x875a2a7f1956a6355883fe63bf440d84abbefe27358c96eb7e9eea0da63d3a93. 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/JPB602200537.
迷い人 - [Vocal : 中納良恵 (EGO-WRAPPIN’)] (DUBFORCE Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83226e810bd6e47502f84ed21779f7d937dc9a62e2bc22d55cd8d24cf338a2b3. 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/JPB602201909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875a2a7f1956a6355883fe63bf440d84abbefe27358c96eb7e9eea0da63d3a93. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPB602200537.
TOKYO SKA TREASURES〜ベスト・オブ・東京スカパラダイスオーケストラ〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d5fc1b8ba20c0e83d4fa83889b4e0ebb3159f884d231069e6488ab78a7c0cf. 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/JPB602000617.
ダンデライオン〜遅咲きのたんぽぽ
ToMoYo covers～原田知世オフィシャル・カバー・アルバム
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70f8ebafc886dd02cc9a7428bfb95a87cb2e13be99fb23968bb14eb17a023f6. 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/JPPO02203862.
NO BORDER HITS 2025→2001 ～ベスト・オブ・東京スカパラダイスオーケストラ～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195fae73b7478d81f701ecc74f60596c0a826d4f569696671845841e0ecbc6c2. 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/JPB602500368.
Salyu 20th Anniversary Tribute Album “grafting”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67399544cf4480f8a024b9c0ada096ee30e60014daa3755d7fda3f7895216780. 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/JPTF02434806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec0fd3403bcaac317265195eee194512129eb07db22883b3d13a4ffe29036f4. 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/JPB601206806.