Kivumbi is a surname. Notable people with the surname include: Muwanga Kivumbi (born 1973), Ugandan economist Ritah Kivumbi (born 1995), Ugandan footballer Ritah Namayanja Kivumbi (born 1980), Uganda
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 0x2d5d5a051359f52c7a0f8c5f9a5538a471e1fe82b3613ea828cfe88fa814f9a0. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/569b2a7f-f9de-4653-949f-2454c72c5167.json and https://artists.proofprofile.net/proofs/artist/569b2a7f-f9de-4653-949f-2454c72c5167.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).