Royz is a Japanese visual kei rock band formed in 2009 in Osaka. Currently, Subaru is on vocals, Kuina is on guitar, Koudai is on bass and Tomoya is on drums and they are on the label B.P Records. H
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 0x41285c33021308c892689cb23e10951f4b6059fb19a09db5df36e0fa2cce06b3. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a8049aa-09f9-4176-846a-411738c04be7.json and https://artists.proofprofile.net/proofs/artist/9a8049aa-09f9-4176-846a-411738c04be7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).