Zinash Tayachew (; born 25 January 1978) is an Ethiopian politician, philanthropist and gospel singer. She is the wife of the Ethiopian Prime Minister Abiy Ahmed and the fourth First Lady of Ethiopia.
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 0xc008c6ed674f9d93b701ad545ec88d7aceafbea6c93fd07e106c09752490ee0d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b31e287-9e37-421c-b73e-77285c1459c7.json and https://artists.proofprofile.net/proofs/artist/5b31e287-9e37-421c-b73e-77285c1459c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).