Aris Christofellis (; born 5 February 1960) is a Greek sopranist (male soprano singer) and musicologist. Life and career Aris Christofellis was born in Athens. After studying piano in Athens and Pari
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 0xb25aff8c36757794826221891442199bcd77239eee3f9e5be68a5ba53cf09cc5. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a2344b7-0b2c-49fc-a910-4607705aed40.json and https://artists.proofprofile.net/proofs/artist/0a2344b7-0b2c-49fc-a910-4607705aed40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).