Eki or EKI may refer to: Eki (goddess), Basque solar deity Eki language, spoken in Nigeria Eki Nurhakim (born 1983), Indonesian footballer Institute of the Estonian Language () Elkhart Municipal
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 0xae01159bd49eafd68153c1cdfa56adfcc94d8638022e4749e935b41670be0fac. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9896b4a-ddfc-45fc-8445-54efee4ae875.json and https://artists.proofprofile.net/proofs/artist/c9896b4a-ddfc-45fc-8445-54efee4ae875.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).