Decentralized Autonomous Organizations (DAOs) management is a complex topic. The SPL Governance Program (source code) provides core building blocks for managing DAOs on Solana blockchain. In this article series, we will elaborate its implementation details and technical subtleties. The Governance program address: GovER5Lthms3bLBqWub97yVrMmEogzX7xNjdXpPPCVZw (note: there is also Mango Governance program…

A brief guide to experimenting with this program — This article is a continuation of the previous article I have written on “How to Initialize Mint Accounts and Mint Tokens Using the Anchor Framework,” found in the following link. I highly recommend reading that article to better understand this tutorial’s background. This article will show you how to use…

A guide on initializing all the accounts needed for a token swap pool and creating one via CPIs to the Token Swap Program. Motivation Soldev provides a detailed explanation and walkthrough of creating a token swap pool completely client-side via Javascript/ Typescript. The @solana/spl-token-swap library provides all the necessary methods for…

Dive into what’s behind the curtains — This article is the article I would love to have found when getting started with Solana programs development. …

Q1. What is Ethereum Virtual Machine (EVM)? The Ethereum Virtual Machine or EVM is the runtime environment for smart contracts in Ethereum. It is not only sandboxed but actually completely isolated, which means that code running inside the EVM has no access to network, filesystem or other processes. …

Blockchain is an immutable public ledger that securely stores data or information, making it less susceptible to hacking or modification. It is a decentralized/distributed digital transaction ledger devoid of central governance or a third party. It protects data by distributing it across all nodes in its ecosystem. When blockchain came…

Learn how to create a smart contract instruction on Solana that deposits tokens from one account to another — gm gm, I’m 0xksure and I write mostly about rust development and solana (usually with the anchor framework) development. I have a lot of experience in backend development, but have also done my fair share of frontend work and general sdk work using typescript. …

In part 1 of this series we saw how to create a React+Typescript front-end that connects to the Phantom wallet and retrieves our public address. In case you need, here are the links to the articles in this series: Part 1: Connecting to the Phantom Wallet Part 2: Requesting an airdrop…

0. Review Secure the Solana Ecosystem (1) — Hello Solana Secure the Solana Ecosystem (2) — Calling Between Programs Secure the Solana Ecosystem (3) — Program Upgrade Secure the Solana Ecosystem (4) — Account Validation Secure the Solana Ecosystem (5) — Multi-Sig 1. Overview In the previous post, we discussed the implementation of the…

In April, our vulnerability detection system discovered an issue in the rBPF of Solana (i.e., the virtual machine where all the Solana dApps are running on: https://github.com/solana-labs/rbpf). After a careful investigation, we found that it is a security vulnerability that can lead to a wrong execution path of a contract…

0. Review Secure the Solana Ecosystem (1) — Hello Solana Secure the Solana Ecosystem (2) — Calling Between Programs 1. Overview In the previous blog, we introduced how to implement the cross-program invocation via function invoke and function invoke_signed. In this post, we will introduce another basic topic - Program Upgrade. 2. Deploy an Upgradable Program By default, all…

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The Metaplex Candy Machine is among the most popular smart contracts used for NFT minting on Solana. Recently, it has even implemented sophisticated logics for detecting and taxing bots. How does the candy machine program work internally? What are its intended use cases and dependencies? How does it detect bots…

Solana token program (source code) is among the most frequently executed Solana smart contracts. Its program id: TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA Most user-deployed Solana smart contracts (directly or transitively) use the token program to mint/transfer/burn tokens (i.e., SPL tokens). …