Hayk Borisi "Hayko" Hakobyan (; 25 August 1973 – 29 September 2021) was an Armenian singer and songwriter. Biography Hayko was born on 25 August 1973 in Yerevan, Armenia (then part of the Soviet Unio
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 0x75e629ef31bf0e4e8ee7269d9284371aa4ee5833f337f61c3790637fd664338f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4841f237-52d0-4cbf-a236-dd98fcc3bb27.json and https://artists.proofprofile.net/proofs/artist/4841f237-52d0-4cbf-a236-dd98fcc3bb27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).