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5 min read
Wagmi + ReactJS Example: Transfer Crypto and Mint an NFT
Wagmi + ReactJS Example: Transfer Crypto and Mint an NFT In this tutorial, we'll learn how to build a Web3 Dapp (Decentralized Application) that connects to your crypto wallet, allowing you to...
9 min read
Uniswap V2: Calculating the Settlement Price of an AMM Swap
Uniswap V2: Calculating the Settlement Price of an AMM Swap This article explains how to determine the price settlement of a trading pair in an Automated Market Maker (AMM). It answers the question...
9 min read
Uniswap V2 Architecture: An Introduction to Automated Market Makers
Uniswap V2 Architecture: An Introduction to Automated Market Makers Uniswap is a DeFi app that enables traders to swap one token for another in a trustless manner. It was one of the early automated...
9 min read
Uniswap v2 router code walkthrough
Uniswap v2 router code walkthrough The Router contracts provide a user-facing smart contract for safely minting and burning LP tokens (adding and removing liquidity) safely swapping pair tokens They...
12 min read
A comprehensive guide to the ERC 721 standard and related security issues
A comprehensive guide to the ERC 721 standard and related security issues ERC721 (or ERC-721) is the most widely used Ethereum standard for nonfungible tokens. It associates a unique number with an...
15 min read
Getting a smart contract audit: what you need to know
Getting a smart contract audit: what you need to know A smart contract audit is a review by blockchain security experts to ensure that users will not lose funds due to a malfunction or security...
2 min read
OpenZeppelin Ownable: Use Ownable2Step Instead
OpenZeppelin 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...
3 min read
Solidity Staticcall EIP 214
Solidity Staticcall EIP 214 Staticcall is like a regular Ethereum call except that it reverts if a state change happens. It cannot be used to transfer Ether. Both the EVM opcode, the Yul assembly...
5 min read
Understanding smart contract metadata
Understanding smart contract metadata When Solidity generates the bytecode for the smart contract to be deployed, it appends metadata about the compilation at the end of the bytecode. We will examine...
7 min read
Ten beginner project ideas after you learn Solidity
Ten beginner project ideas after you learn Solidity Now that you've completed our solidity tutorial, what's next? You now have enough knowledge to build any of the following projects. Knowledge comes...
3 min read
Lagrange Interpolation with Python
Lagrange Interpolation with Python Lagrange interpolation is a technique for computing a polynomial that passes through a set of $n$ points. Interpolating a vector as a polynomial Examples A straight...
4 min read
The Schwartz-Zippel Lemma and its application to Zero Knowledge Proofs
The Schwartz-Zippel Lemma and its application to Zero Knowledge Proofs Nearly all ZK-Proof algorithms rely on the Schwartz-Zippel Lemma to achieve succintness. The Schwartz-Zippel Lemma states that...