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Interface and InterfaceAccount are useful when your program can handle any account or program that adheres to a particular interface. By default, if you require an account type or program, Anchor enfo …

You mention the Rust Anchor Framework, but that's only used for on-chain programs. If you're trying to fetch a past transaction, you don't need Anchor, just the JSON RPC API. Specifically, you can u …

If we look at the error closely it says Error: Function _ZN14solana_program4vote5state9VoteState11deserialize17h4e0d3b92a7040b50E Stack offset of 6344 exceeded max offset of 4096 by 2248 bytes, please …

This is a guess, since the error message is confusing, but you should try to make sure that your type aligns on an address of 1 using arrays, ie: #[zero_copy] #[repr(C)] #[derive(Debug, Default)] pub …

The instruction expects it'll receive raw bytes, and not a hex string, so you'll also need to decode the hex strings as bytes: let recovered_pubkey = secp256k1_recover( &hex::decod …

Only transaction data is persisted longterm and accessible through the public RPC nodes at api.mainnet-beta.com, and the actual account contents are not snapshotted at each transaction. You can fetch …

The function is given in the error message: _ZN112_$LT$solana_program..instruction..InstructionError$u20$as$u20$solana_frozen_abi..abi_example..AbiEnumVisitor$GT$13visit_for_abi17h14ef924a4ab59970E A …

The build error tells you that solana-program-test = "=1.10.38" requires spl-associated-token-account 1.1.1, but anchor requires 1.0.5, so you'll have to drop solana-program-test to a lower version th …

If you look at the definition of the program entrypoint at https://docs.solana.com/developing/on-chain-programs/developing-rust#program-entrypoint, you'll see: This entrypoint takes a generic byte ar …

Unfortunately, the only way is to add fields to the account. By the time your program sees it, it'll just see an initialized account. Depending on what you need, you could ask the anchor team to add a …

You've imported the Account from the SPL Token account, and not the Anchor account. Try to remove use anchor_spl::token::spl_token::state::Account; since the Anchor Account is part of the Anchor prelu …

The Anchor account types documentation says: Interface: Type validating that the account is one of a set of given Programs This just means that the given account is one of a set. For example, if you …

Before initializing any account, you need to "create" it, meaning you system_instruction::allocate 165 bytes and system_instruction::assign it to the token program.

Once in awhile, you have to pull out the oldie-but-goodie: use the source, Luke! If we look at the definition of CpiContext::new at https://github.com/coral-xyz/anchor/blob/3c6fc2ba2d06a799b53b27a282e …

Unfortunately, Solana programs cannot bring in every possible dependency, mainly because the runtime only provides access to certain syscalls. The apecs crate appears to bring in many other dependenci …