This repo contains demo code for interacting with the Ethereum blockchain using the Ethers.js library and Metamask browser plugin.

Pull requests welcome.

• react.js
• ethereum basics
• metamask
• asynchronous javascript

• Metamask browser plugin
• Node & NPM
• VS Code (or similar)
• Terminal window (VS Code inbuilt, powershell, gitbash)
• Compiler requirements
  • See https://docs.soliditylang.org/en/v0.7.4/installing-solidity.html for further details.
  • Most of these requirements may already be installed already (eg git).

1. clone the repo: git clone https://github.com/severalpens/metamaskdemo.git
2. run npm install to install npm packages
3. start the app: npm start
4. visit http://localhost:3000 and open developer tools (f12) to see console.log outputs
5. To compile contracts, run npm i -g truffle then truffle compile

• t1_generateAccounts: Generate new Ethereum Accounts
• t2_getBalance: Get the balance of an Ethereum Account
• t3_transferEth: Transfer Eth balance between two Ethereum Accounts
• tc1_createFungibleContract: Create a new contract using ERC20 spec (Fungible Token)
• tc2_transferTokens: Transfer tokens between accounts
• t6_createNFT: Create a new contract using ERC720 spec (Non Fungible Token)
• tc4_transferNFT: Transfer an NFT between Ethereum Accounts