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How Tornado Cash Works (Line by Line for Devs) !tornado cash tutorial by rareskills Introduction to Tornado Cash Tornado Cash is a cryptocurrency smart contract mixer that enables users to deposit...
Last updated on Oct 22, 2025Low Level Call vs High Level Call in Solidity A contract in Solidity can call other contracts via two methods: through the contract interface, which is considered a high-level call, or by using the...
Last updated on Oct 22, 2025Mastering Solidity: Master the Computer Science Fundamentals First !put in the reps text with a punch bag I hate computer science! I'll spare you the traditional arguments for why you should study...
Last updated on Oct 22, 20252 min read
noDelegateCall Explained The modifier prevents delegatecall from being sent to a contract. We will first show the mechanism for how to accomplish this then later discuss the motivation for why one...
Last updated on Oct 22, 2025OpenZeppelin Ownable: Use Ownable2Step Instead The modifier is probably one of the most common patterns in Solidity. In the following example, the function can only be called by the address...
Last updated on Oct 22, 2025The second preimage attack for Merkle Trees in Solidity The _second preimage attack_ in Merkle trees can happen when an intermediate node in a Merkle tree is presented as a leaf. The name of this...
Last updated on Oct 22, 2025Delegatecall: The Detailed and Animated Guide This article explains how delegatecall works in detail. The Ethereum Virtual Machine (EVM) offers four opcodes for making calls between contracts: * and...
Last updated on Oct 20, 20259 min read
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...
Last updated on Oct 17, 202514 min read
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...
Last updated on Oct 17, 202510 min read
Solana Instruction Introspection Instruction introspection enables a Solana program to read an instruction other than its own within the same transaction. Normally, a program can only read the...
Last updated on Oct 16, 202522 min read
Multiplication of Polynomials in Point Form Polynomial multiplication is widely used in zero-knowledge proofs and mathematical cryptography. But the brute force or traditional approach for...
Last updated on Oct 16, 202513 min read
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...
Last updated on Oct 15, 2025