r.o.r/s (Reflections of Renaissance/Sounds) was a short lived Japanese music group, formed in 2003 by Masami Okui and Chihiro Yonekura. The group was managed by the record company King Records. The gr
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 0x9180aff6d09e21ad256ae2b188fc9d4338ae3c4c561f523237a2d2bd3a436918. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0bac487-2275-4db2-94a1-7a71796bd332.json and https://artists.proofprofile.net/proofs/artist/b0bac487-2275-4db2-94a1-7a71796bd332.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).