DracoVirgo is a Japanese alternative rock band, formed in 2017. Career Three members are the former members of High and Mighty Color, which disbanded in 2010. They formed the new band DracoVirgo on A
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 0x4d34622876ac5e98df1338098e649aac594c5b5a52b3ea3b64759d0cf9588025. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f452b2b3-7182-4c6c-b9bc-5f15575f4809.json and https://artists.proofprofile.net/proofs/artist/f452b2b3-7182-4c6c-b9bc-5f15575f4809.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.