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 0x8076588ef0285fe8ae022e3457be968385761b1bfedc363d25f4d786293a8cd7. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f0ac68b-b511-43ec-87fa-2006ae55c73a.json and https://artists.proofprofile.net/proofs/artist/4f0ac68b-b511-43ec-87fa-2006ae55c73a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
仮面ライダーゼロワン 主題歌＆挿入歌 ベスト ソング コレクション
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 0xc22582c29473c650a2d6ea97a37dc0433a4e8b95fe095669a2a3ce82e9091368. 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/JPB601904011.
Another Daybreak（『仮面ライダー 令和 ザ・ファースト・ジェネレーション』主題歌）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ad555a863ca9a824aa138d40031f247d15976c3c5f0c99a47f6577aecdeb3d. 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/JPB601904012.
お前を止められるのはただ一人、俺だ！～Find a new life（『仮面ライダーゼロワン』挿入歌）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780d2d6bcf2f910539b2274eb331ebc198911aad7d62f2e813f9d802e877c679. 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/JPB602002632.
ハイブリッドライズ！ゼロワン～Rising sun（『仮面ライダーゼロワン』挿入歌）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5141570dc97d384a70ff3892fba4a575456309a6cb99c041d649aa6107615e20. 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/JPB602002633.
変身！ゼロツー～Now is the right time（『仮面ライダーゼロワン』挿入歌）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a41e44f358a0a0f9e690ff089da520b1d0ffbc3d39b47f476057d62bbb6670. 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/JPB602002634.
PARTY ANTHEM ～Good vibes only～ (2022 remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ef0faffcd94543d2e8785385e4bea56cdafcd469d640610fe944f5e7303d45. 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/JPX892300023.