Ki or KI may refer to: Music Ki (album), a 2009 album by Devin Townsend Project Ki, a 1979 album by Kitarō "Ki", a song from the album Minecraft – Volume Beta by C418 Businesses and organizations
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 0x6879fe95a324ae97a4262abe61ad492f4c9f59d7d4a9ad2995abad45706d72a0. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f1b12c3-3283-4892-a630-92ececa74d63.json and https://artists.proofprofile.net/proofs/artist/7f1b12c3-3283-4892-a630-92ececa74d63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).