Cyntia was a Japanese heavy metal band formed in 2011. They are believed to have been the first act from the Girls Metal Band Boom to have signed to a major record label when they joined Victor Entert
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 0x4f6b15ab2b417c3e3a66bccf8ca53909c7e4504151706bab4fbfd85cc21d38f3. 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/fc2dbea9-6e38-4dc3-abed-7d6e822afcb3.json and https://artists.proofprofile.net/proofs/artist/fc2dbea9-6e38-4dc3-abed-7d6e822afcb3.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 0x373b8c768669162f3441a1d613b14dd65172a9440c3edad85cdfe5d94e524a4e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI01325200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532ec87703f7de76ac894dc2df0c0c053fbc62d80bc0f3dfbddf3dabcd908c25. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPZ921407438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f12e6e1730e9008225db0c2077dac7da11557a4236f5b350e140ab29ad500ec. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:46Z), 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/JPZ921407439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216eac0a8b6462dd3a408510eda9716c93d86b414ad704ab97796ad5962b4f2b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:36Z), 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/JPZ921407440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320eec4adc0014b032a5fab5a59ee062950b876c3661cb9c33c6d0c27f6a1cec. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPZ921407441.
Mischievous Kiss 2: Love in Tokyo (Original Sound Track)