Peter Rauhofer (29 April 1965 – 7 May 2013) was an Austrian-American disc jockey (DJ), remixer and producer who formerly worked under the moniker Club 69 as well as Size Queen. A native of Vienna, Aus
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 0x5e6525c5f2b433218bc042e326eb0a5ee343775c4bc038d09beddc8a9a3f4b00. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2f7e73c-05cd-410b-ac93-17640bb3c5de.json and https://artists.proofprofile.net/proofs/artist/a2f7e73c-05cd-410b-ac93-17640bb3c5de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).