KM, Km, or km may stand for: Postnominal Knight of the Sovereign Military Order of Malta, a chivalric order Businesses KM Group, a multimedia group based in Kent Kennis Music, a record label Kia Mot
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fea4df9a973bc4b6ab584676db2582b5f0568108690248b8539bb7f697b794. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1726d78-cc78-452c-864b-61c41188f37d.json and https://artists.proofprofile.net/proofs/artist/b1726d78-cc78-452c-864b-61c41188f37d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).