
Solidity design patterns are a critical component of smart contract development, enabling developers to create robust, efficient, and secure decentralized applications. "Solidity Design Patterns - Best Practices & Techniques for Developing Smart Contracts" is a comprehensive ebook available on Amazon that delves into the various design patterns used in Solidity smart contract development.

The ebook provides a detailed explanation of popular design patterns like the Security, Gas Optimisation, Proxy, and many more. It also covers the latest design patterns used in the development of decentralized finance (DeFi) applications. The ebook provides a step-by-step guide to help developers understand and implement these patterns to create high-quality smart contracts.

With Solidity design patterns, developers can create reusable code, minimize errors, and make their smart contracts more secure.The ebook provides practical examples, code snippets, and diagrams to help readers understand and implement these patterns in their projects.

Whether you are a beginner or an experienced developer, "Solidity Design Patterns - Best Practices & Techniques for Developing Smart Contracts" is an essential resource that provides a comprehensive guide to developing high-quality smart contracts. With the latest design patterns and best practices, this ebook is a must-have for anyone looking to excel in smart contract development. Get your copy today on Amazon and start building better smart contracts!


An Essential guide to developing Smart contract on Ethereum with Solidity Design Patterns.Solidity design patterns are a critical component of smart contract development, enabling developers to create robust, efficient, and secure decentralized applications.

Solidity Design Patterns


Node Guardians is a gamified educational platform that creates lore-rich programming challenges for experienced Solidity, Huff, Cairo and Noir developers. Think of it as a skill-based RPG where developers can become familiar with specific stack components and a place where they can showcase their abilities. 

### Skills Upgrade

We have created a series of coding challenges called “quests” to engage smart contract developers, providing them with the knowledge to build safe and gas efficient applications. In addition to practical skills, we also provide theoretical knowledge about crypto history, technology and economics through building a library of articles that break down complex concepts of distributed systems & decentralized finance.


### Public Good

Node Guardians is a public good for developers and will always remain so. 
In addition to supporting the growth of cool ecosystems, we plan to make the platform sustainable by managing [infrastructure](https://infra.nodeguardians.io/) across various networks.

Rewarding non-contributing operators wastes funds, we prefer community-building and education.


Node Guardians is a gamified educational platform that creates lore-rich programming challenges for experienced Solidity, Cairo, Huff and Noir developers.

Node Guardians


Harvard University's CS50 is one of the most popular beginner computer science courses in the world. 

Harvard CS50

Friday afternoon conversations with Web3 builders. Hosted by @nnnnicholas.

Web3 Galaxy Brain 🌌🧠


The EIP-2535 standard has several projects already using it, most notably Aavegotchi holding many millions of dollars.

What is it and should you use it instead of the commonly used proxy upgrade pattern?

We're not talking about diamond programmer hands here of course. A diamond refers to a smart contract system where functionality and storage is split up into separate contracts. You might already be familiar with the upgrade proxy pattern. It shares some similarities to a diamond. In short to fix the problem of smart contracts not being upgradable due to their immutability, a proxy pattern deploys two contracts.

EIP-2535: A standard for organizing and upgrading a modular smart contract system.

EIP-2535 Diamond standard


Don't just write require statements for a specific function; write require statements for your protocol. Function Requirements-Effects-Interactions + Protocol Invariants or the FREI-PI pattern can help make your contracts safer by forcing developers to focus on protocol level invariants in addition to function level safety.

A new pattern for DeFi Smart Contract Security

You're writing require statements wrong


To help solve the issues of communication between Web2 and Ethereum, the EVM has allowed for the generation of logs. In Solidity we make use of these logs by emitting events.

Solidity Events Guide


Permit21 is a contract that allows using Permit signatures2 with any token. You just approve a Permit2 contract once and then you can use it with any contract that integrates it.

It solves a crucial UX problem, but it has seen quite slow adoption. Possibly because its documentation leaves the developers scratching their heads instead of giving them an idea how to integrate Permit2 in their contracts.

This tutorial will teach you how to use Permit2 contract from Vyper and Python using copy and paste method.

Permit21 is a contract that allows using Permit signatures2 with any token. You just approve a Permit2 contract once and then you can use it with any contract that integrates it.

Vyper Permit2 Tutorial


Have you ever queried an Ethereum block and wondered what that "logsBloom" was? Have you gone looking for the most efficient way to find an event within a block? If you answered "yes" to either of the above, then you're in for a good time. This post will quickly describe Bloom filters, how they're leveraged in Ethereum, and how to filter blocks for events in Python.

This post will quickly describe Bloom filters, how they're leveraged in Ethereum, and how to filter blocks for events in Python.

web3.py Patterns: Bloom Filters


Included in the (beta) release of web3.py v7 are some important and exciting updates to the asynchronous providers:

- The AsyncIPCProvider is live.
- WebsocketProviderV2 has graduated from beta and been renamed to WebSocketProvider (note the capital S).
- The original WebsocketProvider has been deprecated and renamed to LegacyWebSocketProvider.

In this post, we're diving into the new and improved WebSocketProvider. We'll introduce the WebSocket protocol, why the WebSocketProvider got a makeover, and how to use the new features.

web3.py Patterns: WebSocketProvider


Sign-In with Ethereum is a game-changer for user choice on the Internet.

Instead of submitting to "Big Login," users can now login using the same keys controlling their blockchain accounts--without an intermediary. This approach has the promise but not guarantee to rebalance power dynamics in favor of the user. With Sign-In with Ethereum, we open a path where large corporations can no longer strip a user's ability to access services nor spy on their actions.

Sign-In with Ethereum is an open standard for authentication developed entirely in the open, informed through public discourse with community members across dapps, apps, wallets, security firms, and far more. You can find all the meeting recordings and notes on login.xyz. This approach is a far cry from the closed development of proprietary identity systems found in tech giants or government vendors, rightfully protested by privacy and digital rights advocates.

In contrast, Sign-In with Ethereum (EIP-4361) defines an open creative commons (CC) signing format for Ethereum accounts to securely authenticate with any web-based services. It was built by the community with direct support from the Ethereum Foundation and ENS, with Spruce tapped to lead the charge late last year. I'm excited to discuss the significance of Sign-In with Ethereum, and how it is so much more than "Connect Wallet" for all builders in Web3.

Sign-In with Ethereum is a game-changer for user choice on the Internet. Instead of submitting to 'Big Login' users can now login using the same keys controlling their blockchain accounts--without an intermediary.

Why Sign-In with Ethereum is a Game-Changer


The ultimate web3 product design resource. Our platform curates the best web3 product and design examples. Learn from tried and tested web3 products, discover solutions, and design better user flows.

Curating the best design examples and journeys from leading web3 products.

#design patterns

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