QUELL/和泉柊羽(CV:武内駿輔)、堀宮英知(CV:西山宏太朗)、久我壱星(CV:仲村宗悟)、久我壱流(CV:野上翔)
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 0x1e701a80228f9b84330c1d2839778942cb968f978d9efdb13f7a989d5f84ff92. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cb455bd-d7fc-4bbb-8ffd-d9d691313a3a.json and https://artists.proofprofile.net/proofs/artist/2cb455bd-d7fc-4bbb-8ffd-d9d691313a3a.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 0x3ef9b03dfc97ce113afcf27969dc88c7829570b23a042248db97edcbc7a7e440. 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/JPR501717872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf493b73eb90d94b151b7411fd25480d55c3fc122b0c059ce14fbaa6d89d65495. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:38:12Z), 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/JPR501717139.
TSUKIPRO THE ANIMATION 主題歌③ QUELL「Because you are」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2eead2e5a85314cc112806f8e446e78341bfc739b9df38ae24f1f57a3aca5e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPR501718727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79948ea826161e5e9bf80984e29021fa67b4749e2bfb5232402ecf5208f71af. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPR501928005.
『TSUKIPRO THE ANIMATION 2』主題歌③ QUELL「YOUR FREEDOM」
「TSUKIPRO THE ANIMATION」ENDING THEME SONG COLLECTION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ad4fa9727f83bef910aa754e94758be81e08f360ce10862cfc147d9e8c6265. 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/USA2P2444643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a2abbe6cb315ecf16dd2c260c7d2716a058bffc652ab21abfbd4f4027792d4. 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/USA2P2444647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda84c7f8036fe07ec1fd9929a066a2b839b3a9bec6ddbaa81c1b3239097d3b0. 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/USA2P2444651.