malbeclabs

Use when reviewing on-chain program (Rust) code or PRs in this repo — the DoubleZero Ledger serviceability and geolocation programs (borsh serde + AccountType enum). Complements smartcontract/programs/CLAUDE.md (the canonical rules) with diff-scan checklists, real review examples, severity guidance, and a review process. Covers sibling-processor parity, account/signer validation, PDA seeds+bump, access control, instruction validation, checked arithmetic, rent/space/heap caps, error handling, off-chain RPC hygiene, and testing.

Help users connect to and operate on the DoubleZero / Malbec Labs network — validator and tenant setup, multicast, rewards, geolocation, and contributor operations — by grounding answers in the official documentation and live network data.