Solana Insta Contracts

Use the program-and-account model

Solana’s documentation describes programs as executable accounts and mutable state as living in separate data accounts passed through instructions. Ask developers to explain how those elements appear in the specific application rather than treating a general overview as a deployment description.

Ask who can change the system

For the upgradeable loader described in the source, a retained upgrade authority permits changes; revoking that authority makes the program immutable. Determine what the actual deployment uses. Discuss both change-control risks and the practical consequences of a component that cannot be patched.

Make an instruction understandable

Choose an important operation and describe its expected inputs, authorization, prior state, and resulting state. Ask specialists to examine incorrect accounts, repeated actions, unexpected ordering, and dependencies. Keep the reviewed version and assumptions connected to the deployment record.