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 0x3d5819cefb3ae6dd59a1bb58e86a790ab872b20f3bb3ccf20c7803b05e4e3177. 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/5df4544a-8bf3-410a-a9a1-06246798770d.json and https://artists.proofprofile.net/proofs/artist/5df4544a-8bf3-410a-a9a1-06246798770d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ROCK IT! BEST PARTY MIX!! -ONLY JAPANESE DANCE MUSIC- (Mixed by BZMR)
まるコレ -SNS BUZZ BEST- (Mixed by DJ AKAMARU from BZMR)
MARUKORE -PARTY J -POP- Mixed by DJ AKAMARU from BZMR (DJ MIX)
BASS GOLD HEAVY BASS ~NIGHT DRIVE MIX~ (DJ MIX)
J-POP That Feels Like Summer ~Best Summer Songs~ (DJ MIX)