ERC4626 Interface Explained ERC4626 is a tokenized vault standard that uses ERC20 tokens to represent shares of some other asset. How it works is you deposit one ERC20 token (token A) into the...

The Solana Token 2022 Specification Token-2022 is a new backward-compatible version of the SPL Token program that supports additional features in the form of extensions. The bytecode for these...

Ed25519 Signature Verification in Solana Verifying Ed25519 Signatures in Solana Anchor Programs This tutorial shows how to verify an off-chain Ed25519 signature in a Solana program. In Solana, custom...

Time Travel Testing with LiteSVM In Solana, writing test cases that depend on the passing of time is tricky. We might want to test that something happens in our code after a day passes, but we can't...

Implementing Token Metadata with Metaplex We introduced the Metaplex metadata standard in the previous tutorial. In this one, we’ll create an SPL token and attach metadata to it using the Metaplex...

How Metaplex Metadata for Tokens Works We have deployed and interacted with SPL tokens, but none of them had a name, symbol, or any metadata attached. Instead, we identified each token by its mint...

Token Sale with Total Supply Tutorial A token sale program is a smart contract that sells a specific token, usually in exchange for a native token like SOL, at a fixed price. The sale runs until a...

Transferring SPL Tokens with Anchor and Web3.js In the previous tutorial, we learned how SPL tokens work. In this tutorial, we’ll implement a full SPL token lifecycle: create, mint, transfer, and...

How the SPL Token Works Solana Program Library Token (SPL Token) is Solana's standard for tokens: how to create tokens and how they should behave. It is Solana’s equivalent to Ethereum’s token...

Introducing ticks in Uniswap V3 This article explains what ticks are in Uniswap V3. Ticks enable gas-efficient accounting of concentrated liquidity, so let’s quickly review concentrated liquidity...