Teff (), Eragrostis tef, also known as Williams lovegrass and annual bunch grass, is an annual species of lovegrass native to Ethiopia, where it originated in the Ethiopian Highlands. It has been cult
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 0x9450f17790bcba52ec53139284912acd3a83fa4ae7226912a370d0343f86e523. Chain 2 (Bitcoin): anchored in block 953888 (2026-06-16T04:55:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d91b463-a8d0-49b2-abd1-50ffd2a96647.json and https://artists.proofprofile.net/proofs/artist/0d91b463-a8d0-49b2-abd1-50ffd2a96647.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).