Cross Program Invocation In Anchor Cross Program Invocation (CPI) is Solana's terminology for a program calling the public function of another program. We've already done CPI before when we sent a...

PDA (Program Derived Address) vs Keypair Account in Solana !Hero image showing PDA (Program Derived Address v.s. Keypair accounts) A program derived address (PDA) is an account whose address is...

Modifying accounts using different signers !Hero image showing Anchor Signer: Modifying accounts with different signers In our Solana tutorials thus far, we've only had one account initialize and...

Transferring SOL and building a payment splitter: "msg.value" in Solana !Hero image showing Transfering SOL and building a payment splitter This tutorial will introduce the mechanism by which Solana...

Init_if_needed in Anchor and the Reinitialization Attack !Hero image showing Anchor init_if_needed In previous tutorials, we've had to initialize an account in a separate transaction before we can...

Tx.origin, msg.sender, and onlyOwner in Solana: identifying the caller !tx.origin msg.sender onlyOwner in Solana In Solidity, the is a global variable that represents the address that called or...

The unusual syntax of Rust !The unusual syntax of Rust Readers coming from a Solidity or Javascript background may find Rust's usage and syntax of , , , , and to be weird (or even ugly). This chapter...

Understanding Account Ownership in Solana: Transferring SOL out of a PDA !Hero image showing Solona account ownership The owner of an account in Solana is able to reduce the SOL balance, write data...

Owner vs Authority in Solana !Hero image showing Owner vs Authority Newcomers to Solana are frequently confused by the distinction between an "owner" and an "authority." This article attempts to...

The Solana clock and other "block" variables !solana clock Today we will cover the analogs of all the block variables from Solidity. Not all of them have 1-1 analogs. In Solidity, we have the...