Code Guides
Step-by-step code base walkthrough on setting up Web3 applications. Applications range from financial tokens to decentralised identity.
Issuing And Verifying Ethereum DIDs with Metamask
A hands-on walkthrough of how to issue and verify claims in the form of JWTs on Ethereum
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Covers key decentralised identity concepts as well as usage of the ethr-did libraries to facilitate interaction with a smart contract registry
Proving Consent on Ethereum: DIDs, JWTs, & Smart Contracts
Understanding how DIDs are implemented in conjunction with a registry smart contract.
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Guide on how to issue and verify custom claims on the ethr-did-registry contract using Veramolabs
libraries (ethr-did, ethr-did-resolver, did-jwt)
Signing In With Ethereum: Owning Your Own Identity
SIWE provides an effective alternative for users wanting to self-custodise their own digital identity via an EVM compatible wallet.
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Covers: SIWE Client/Server Authentication, Sign-In Message Handling, Ethers.js and Metamask Tooling,
Creating Truly Decentralised NFTs — A Comprehensive Guide to ERC721 & IPFS
How IPFS addresses the issue of digital copies by enabling truly decentralised storage for NFT content.
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This includes: IPFS Setup & Data Handling, Hardhat Setup, Extending OpenZeppelin's NFT contracts, Deploying to Goerli, Sending NFTs using Metamask.
ERC721 Using Hardhat: An Updated Comprehensive Guide To NFTs
An end-to-end guide on how to create your own ERC721 token using Hardhat.
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This includes: Hardhat Environment Setup, Extending OpenZeppelin's ERC721 contract, Deploying to Goerli, Sending NFTs using Metamask.
ERC20 Using Hardhat: An Updated Comprehensive Guide
An end-to-end guide on how to create your own ERC20 token using Hardhat.
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This includes: Hardhat Environment Setup, Extending OpenZeppelin's ERC20 contract, Deploying to Goerli, Sending tokens using Metamask.
Bancor3: Token Whitelisting Code Guide
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In order for a token to be listed on Bancor, it will first have to go through a BancorDAO governance process where vBNT stakers will vote.
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Covers whitelisting the token with and without a DAO specified limit.
Bancor3: Pool Creation Code Guide
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Creation of the pool token and the related virtual liquidity pool objects. This then enables providers to start depositing their tokens.
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Covers the witdrawal entitlements, master vault contract, and staking ledger.
Bancor3: Depositing ERC20 Tokens Code Guide
Depositing ERC20 tokens to the Bancor omnipool. A codebase view of how single-sided staking fundamentally changes the AMM liquidity model.
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Covers vaults balances, pool token issuance, staking ledger, setting of exchange rates.
Bancor3: Depositing BNT Tokens Code Guide
A consequence of the Bancor3 omnipool design is that BNT providers are supporting trades across all pools instead of specific pools.
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Covers the virtual balance ratios, pricing, BancorDAO reserve handling and co-investments.
Bancor3: Trading Code Guide
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Bancor3 trades are effectively a deposit of source tokens to the master vault and withdrawal of target tokens from said vault.
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Covers trade calculations/valuations, virtual liquidity pools, and token transfers.
Bancor3: Withdrawal Request Code Guide
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LPs are able to initiate a withdrawal anytime after a successful deposit but can only claim their respective tokens following a mandatory cooldown period.
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Covers withdrawal claims, cooldown period, exit fees, and rewards handling.
Bancor3: BNT Withdrawal Claim Code Guide
LPs are required to manually confirm their BNT withdrawals as the withdrawal value is locked upon request but with the option to cancel.
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Covers BNT balance handling, cooldown checks, reward calculations, and transfer of BNT to LP.
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Bancor3: ERC20 Withdrawal Claim Code Guide
LPs are required to manually confirm their ERC20 withdrawals as the withdrawal value is locked upon request but with the option to cancel.
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Covers withdrawal requests, token calculations, vault and liquidity balancing, pool disabling, and transfers,
Development Concepts
Technical explainers on key Web3 concepts that enable developers to kickstart their journey into building the decentralised web.
DID: Decentralised Identity’s Starting Line
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What are decentralised identifiers and how do they enable individuals to gain ownership over their own digital identities.
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DIDs forms the basis from which others can start to make claims about you.
Verifiable Credentials: Growing Digital Relationships Organically
How Verifiable Credentials allow digital reputation to grow organically without the need for a trusted third party identity provider.
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VCs will be a crucial piece that minimises the profit incentive of data harvesting.
Ethereum Logs Hands-On with Ethers.js
Understanding Ethereum logs via a hands-on example parsing raw log data.
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How events are stored and enable smart contracts to communicate. What are topics and how we can use the ABI to decode logs.
Signing and Verifying Ethereum Messages
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A better Ethereum message signing user experience via enabling messages to be read on Metamask
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Signing human readable messages and verifying message signature with Ethers.js.
Signing and Verifying Ethereum Hashed Messages
Understanding and implementing gas-less transactions on Ethereum. How message signing enables us to digitally prove consent.
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Hashing, signing, and verifying message signature with Ethers.js.
Developer Tools
Getting start with Web3 development through setting up key development tools. Core libraries covered: Ethers.js, Hardhat, Metamask, Express.js, Browserify.
Connecting Metamask with a Local Hardhat Network
Streamlining the development process by enabling developers to see the end-user experience upfront via Metamask.
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Covers: Hardhat Setup, Running a local Network, Adding Network/Accounts to Metamask, Nonce Handling.
Connecting Metamask to your Web Application (Express)
How to interact with Metamask from your Express application using vanilla javascript.
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Covers: Setting up an Express skeleton with views, Script to connect Metamask, Managing the Network/Accounts from Metamask UI.
Connect Metamask with Ethers.js
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Hands-on guide to interacting with Metamask using the Ethers.js library by forming and sending an Ethereum transaction.
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Covers: Running Ethers.js in the browser, Create/Sign transaction requests, View receipt