Advanced Foundry - Introduction to Filecoin and Arweave

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_Follow along the course with this video._ --- ### Filecoin & Arweave On-chain storage can be gas intensive, sometimes prohibitively so. I wanted to make you aware of additional options you could consider for decentralized storage in your projects. Two of the most popular options out there are `Filecoin` and `Arweave`. I've got a great video detailing Filecoin and decentralized storage available [**here**](https://www.youtube.com/watch?v=Cj9r3pKI2L8). I highly recommend you give it watch. 1. **Arweave** Arweave is a decentralized storage network that makes data immune to modification, ensuring data validity over very long periods. This is an ideal solution for anyone looking for a permanent database. 2. **Filecoin** Providing reliable and cost-effective storage, Filecoin is a decentralized protocol that propels the open-market for data storage services. ### Alison from FileCoin Alison Haire brings us her expert take from the Filecoin Foundation, providing a deep dive into the motivations and functionalities of the Filecoin ecosystem. ### Filecoin ::image{src='/foundry-nfts/18-filecoin-arweave/filecoin-arweave1.png' style='width: 100%; height: auto;'} Filecoin, since its launch in 2020, has been working tirelessly towards decentralizing the data infrastructure for the internet. Their layer one solution, Filecoin Virtual Machine (FVM), has launched some impressive functionalities. - **Filecoin Data Deal Making:** It involves setting up an agreement between a client and a miner to store data. - **Tokenization of Data Sets:** With tokenization, data can be protected securely and transparently. - **Data DAOs:** Filecoin's on-chain tools allow data to be collectively owned and governed by an organization (DAO - Decentralized Autonomous Organization). And many more use cases are being developed, showcased in the [Filecoin docs](https://docs.filecoin.io/). To get started with Filecoin, try deploying a smart contract to FVM, or use the storage helper - [**Web3 Storage**](https://web3.storage/) or [**NFT Storage**](https://nft.storage/), to engage with the technology directly. ::image{src='/foundry-nfts/18-filecoin-arweave/filecoin-arweave2.png' style='width: 100%; height: auto;'} ### Wrap Up With this brief aside complete, we have one major concept I want to add context to in this lesson. Repeatedly we've been using `abi.encode` and `abi.encodePacked` to concatenate strings basically. It's about time we learnt what's actually going on under-the-hood. In the next lesson we're gunna get a little more low-level. I'm sure you're ready for it. See you soon!

Introduction to Filecoin and Arweave

Introduces Filecoin and Arweave, two decentralized storage solutions for NFT metadata. The lesson explores their features, benefits, and use cases, with insights from an expert at the Filecoin Foundation, highlighting the future of decentralized data storage.

Course Overview

About the course

What you'll learn

Advanced smart contract development

How to develop a stablecoin

How to develop a DeFi protocol

How to develop a DAO

Advanced smart contracts testing

Fuzz testing

Manual verification

Course Description

Who is this course for?

Engineers
Smart Contract Security researchers

Potential Careers

Web3 Developer Relations

$85,000 - $125,000 (avg. salary)

Web3 developer

$60,000 - $150,000 (avg. salary)

Smart Contract Engineer

$100,000 - $150,000 (avg. salary)

Smart Contract Auditor

$100,000 - $200,000 (avg. salary)

Security researcher

$49,999 - $120,000 (avg. salary)

Meet your instructors

Patrick Collins

Founder at Cyfrin

Web3 engineer, educator, and Cyfrin co-founder. Patrick's smart contract development and security courses have helped hundreds of thousands of engineers kickstarting their careers into web3.

Guest lecturers:

Juliette Chevalier

Lead Developer relations at Aragon

Ciara Nightingale

Developer relations at Thirdweb

Vasiliy Gualoto

Developer relations at Cyfrin

Nader Dabit

Director of developer relations at Avara

Ally Haire

Developer relations at Protocol Labs

Harrison

Founder at GasliteGG

Vitto Rivabella

Lead Developer relations at Cyfrin

Last updated on November 29, 2024

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Solidity Developer

Advanced Foundry

Section 1: Develop an ERC20 Crypto Currency

Duration: 36min

Section 2: Develop an NFTs Collection

Duration: 3h 06min

1. Introduction to NFTs

his introductory lesson on Non-Fungible Tokens (NFTs) covers the basics of NFTs, including their creation, dynamics, and values. It features a practical project involving dynamic NFTs of dogs, emphasizing the addition of NFTs to MetaMask and connecting with platforms like OpenSea for selling NFTs. Duration: 3min

2. What is an NFT

Dive deep into the world of Non-Fungible Tokens (NFTs), exploring their uniqueness compared to traditional tokens (ERC20s). The lesson focuses on the distinct nature of NFTs, their application in digital art, and the use of platforms like OpenSea and Rarible for trading. Duration: 7min

3. Foundry setup

This session guides you through setting up the Foundry environment for NFT development. It includes instructions on creating directories, initializing your project, and using OpenZeppelin contracts for defining NFTs, highlighting the process of minting and deploying NFT images. Duration: 11min

4. Introduction to IPFS

Learn about the Interplanetary File System (IPFS), a decentralized data storage system, and its use in NFT development. Understand the concept of hashing data, pinning it on IPFS nodes, and the global network of nodes, differentiating it from blockchain in terms of data storage and access. Duration: 8min

5. Upload and use IPFS data (token URI)

This section explores using IPFS for hosting NFT images and metadata, focusing on OpenSea for practical demonstration. It also covers the customization of NFT appearances by allowing users to choose their Token URI, thus determining the look of their tokens. Duration: 7min

6. Writing the deployment script

Learn how to write a deployment script for NFTs. This includes using Forge script for deploying Basic NFTs and understanding the contract deployment process, highlighting the importance of testing and compiling before deployment. Duration: 2min

7. Test the NFTs smart contract

Focuses on testing the basic NFT contract using Solidity. It includes detailed steps for conducting tests like confirming the NFT name and testing the mint function, emphasizing the importance of testing for successful smart contract deployment. Duration: 11min

8. Quiz: NFTs Collection Intro Quiz

Questions: 9

9. Interact with a smart contract

Teaches how to interact with Solidity smart contracts, particularly for minting NFTs. It includes setting up the necessary environment and scripts, and deploying NFTs using tools like Foundry and IPFS. Duration: 3min

10. Deploy your NFTs on the testnet

Guides on deploying NFTs to a testnet and importing them into MetaMask. It covers the use of Anvil for deployment, extracting contract data, and using MetaMask to interact with the deployed NFTs. Duration: 7min

11. IPFS and Pinata vs HTTP vs on chain SVGs

Discusses the pros and cons of using IPFS, HTTP, and on-chain SVGs for storing NFT data. It covers the pitfalls of each method and introduces services like Piñata Cloud for securing digital assets on IPFS. Duration: 4min

12. What is an SVG?

Explains Scalable Vector Graphics (SVGs), their advantages, and how to create them. The lesson includes coding snippets for SVG creation and highlights their use in NFTs for on-chain storage. Duration: 8min

13. Create a dynamic NFTs collection

Focuses on creating dynamic SVG NFTs, particularly a mood-changing NFT that alternates its appearance. It includes detailed instructions for setting up the NFT project, minting the NFTs, and defining their appearance. Duration: 5min

14. Encoding SVGs to be stored onchain

Teaches encoding SVGs in Base64 format for on-chain storage in NFTs. It covers the process of encoding and testing SVG NFTs, ensuring their proper functioning and appearance Duration: 17min

15. Modify the NFT image onchain

This section is about adding functionality to change the NFT's appearance on-chain. It includes creating a function to flip the mood of an NFT, ensuring only the owner can modify it Duration: 3min

16. Create the deployment script

Guides on automating the deployment process of Mood NFTs using scripting. It covers setting up the deploy script, encoding SVGs, and testing the deployment script for effectiveness. Duration: 18min

17. Debug your smart contract

Guides on automating the deployment process of Mood NFTs using scripting. It covers setting up the deploy script, encoding SVGs, and testing the deployment script for effectiveness. Duration: 6min

18. Deploy and interact using Anvil

This lesson covers deploying and interacting with NFTs using Anvil, a local Ethereum network. It includes setting up MetaMask with Anvil, deploying Mood NFTs, minting, and flipping their mood, demonstrating the process of NFT interaction on a local blockchain network. Duration: 6min

19. Introduction to Filecoin and Arweave

20. Advanced EVM - Opcodes, calling, etc

Delves into advanced Ethereum Virtual Machine (EVM) concepts, focusing on opcodes and function calls. It demonstrates decoding transaction data using MetaMask and highlights the importance of verifying transactions to ensure safety in the cryptocurrency world. Duration: 24min

21. Quiz: NFTs Collection Recap Quiz

Questions: 5

22. Advanced EVM - Encoding

Explores ABI encoding and decoding in the context of EVM. The lesson breaks down the process of converting variables for use in transaction data fields, emphasizing the importance of understanding bytecode and binary for blockchain transactions. Duration: 6min

23. Advanced EVM - Recap

A recap of the advanced EVM concepts covered in the course. It revisits topics like string combination, low-level concepts, binary encoding, and the use of the 'call' function in Solidity, summarizing the key takeaways from the advanced sections of the course. Duration: 2min

24. EVM signatures selectors

Focuses on EVM encoding signatures and selectors. The lesson explains how to populate the data field in function calls, the role of function selectors, and the use of ABI to call functions without explicit interface definitions. Duration: 15min

25. Verifying a transaction in Metamask

Provides a guide on verifying transactions in MetaMask. It includes steps to decode transaction data and emphasizes the importance of transaction verification for security purposes, especially when swapping tokens or interacting with smart contracts. Duration: 8min

26. Section recap

A comprehensive recap of the entire course, summarizing key concepts such as NFT basics, storage options, advanced EVM topics, smart contract interaction, and the use of tools like MetaMask for transaction verification. Duration: 4min

Section 3: Develop a DeFi Protocol

Duration: 5h 02min

Section 4: Airdrop and Signatures

Duration: 2h 47min

Section 5: Upgradeable Smart Contracts

Duration: 1h 23min

Section 6: Account Abstraction

Duration: 4h 28min

Section 7: DAOs

Duration: 1h 19min

Section 8: Security

Duration: 58min