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 0x4a015e1d80b775236c73bb8501890d189f4ebc0e86f695fb02b8b4844d0710ee. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c2ec0a6-3836-4a26-9730-2f4de2cc180f.json and https://artists.proofprofile.net/proofs/artist/8c2ec0a6-3836-4a26-9730-2f4de2cc180f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
平成仮面ﾗｲﾀﾞｰ20作品記念ﾍﾞｽﾄ3
ジオウ 時の王者（『仮面ライダージオウ』挿入歌）
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 0xa51941ff66a9fea20bf5ac03c49d1bb1e8bfe07abcba0c245c0375e341611bf9. 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/JPB601900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a96bfaef18ac43b0b563f2ab02e211ef61bba871d1e7822172654499b45a51f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB601900145.
月の満ちる時（『仮面ライダージオウ』挿入歌）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312dd015f039fbe654f4d8dbaa3d869f3e283ec8a4932c1120feaab294c1f0f4. 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/JPB601900146.
仮面ライダークウガ！（平成ベスト RE-RECORDING ver.）『仮面ライダークウガ』主題歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3533b3adc61fbf35b4498231d95f0c300bb8bda92b69a87468e872ef17af87b. 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/JPB601901331.
Go！Now！～Alive A life neo～（『RIDER TIME 仮面ライダー龍騎』主題歌）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8612d57134630c869b424b2b98f7d171b19d2a21e1123660a219d65ef5b61591. 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/JPB601901333.
Climax Jump DEN-LINER form（平成ベスト RE-ARRANGE ver.）『仮面ライダー電王』主題歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2e08102e91b762bc975514d119bb075745c9c3d7aa691f179dcecd3b8f3048. 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/JPB601901337.
Journey through the Decade（平成ベスト 仮面ライダーGIRLS ver.）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d056c0e27a043cbe01ec476e6e35e5043de3252d31254c109768ccb2cc9de30. 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/JPB601901340.
Finger on the Trigger（平成ベスト RE-EDIT ver.）『仮面ライダーW』挿入歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dbd76315bf31c3ecfeded78edf27e568d53e3ac9c14b85f8abe35463391e39. 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/JPB601901341.
Time judged all ～8 years later～『仮面ライダーオーズ／OOO』挿入歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bc3c2ea149abb76880c56a18d0b50b800887725cae0a410f5bd28fd6913b19. 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/JPB601901342.
我ら思う、故に我ら在り（平成ベスト 仮面ライダーGIRLS ver.）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b718790150e20371b6943cd031dcaaeef24a20d1e160f76b594f22c2f7a4aa. 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/JPB601901343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835fb99f373b34bd41e2d34a6991415604b0d17b056ff5daabf6e8e5696dd71c. 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/JPB601901344.