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You will have to use the solana instructions sysvar. You need to ensure that there is only one instruction and that that instruction is an invocation to your program, otherwise a user could create a p …

A man-in-the-middle attack can be prevented by using a trusted rpc node through https with tls. This will inherently prevent this attack. If you don't have a trusted node you will need to run your own …

In general I suggest passing references rather than values for pubkeys. It goes against usual logic but bpf compute cost doesn't care about cache locality. There are some cases where it might be bette …

A single transaction has a byte limit which is what causes that ~33 account limit. That limit also includes programs in addition to what you listed above. A transaction is atomic in and of itself, but …

Anchor zero copy doesn't follow the rules of how Pod (the backing trait from bytemuck) is supposed to be implemented (violates the unsafe constraints). To fix it you need to add #[repr(packed)] to get …

You use cargo build-sbf or cargo build-bpf (depending on you used version) to build your program. That will build a .so file in your target/deploy directory. From there you can use the solana program …