ClevelandCoin (CLE) is a new Ethereum ERC20 formed in Cleveland, OH, at the Crypto Cleveland Meetup. It has been developed as a resource to learn how to create Ethereum contracts, and the goal is to continue researching and adding features until the community is comfortable releasing the token on the main Ethereum blockchain, by doing an ICO.

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes.

What things you need to install the software and how to install them

• NodeJS / NPM:
  • https://nodejs.org/en/download/package-manager/
• Yarn
  • https://yarnpkg.com/en/docs/install
• ethereumjs-testrpc
  • https://github.com/ethereumjs/testrpc
• Truffle:
  • http://truffleframework.com/
• MetaMask
  • https://metamask.io/

After cloning this repository and installing the above dependencies, perform

$ yarn install

to get the zeppelin-solidity boilerplate project files installed. In a new terminal window, start

$ testrpc

which starts a new local ethereum blockchain running on localhost:8545. You'll see some output like the following:

EthereumJS TestRPC v4.1.3 (ganache-core: 1.1.3)

Available Accounts
==================
(0) 0x2a500247d0a0770e0c71d435f4b84d15fe19d7d3
(1) 0x4199984a9385cdda8440c578f07eb5ee0f29a053
...

Private Keys
==================
(0) 3cbd4919c7b143d50b1edbe29110e4ae176a783c81f5b69c6dbb4f939a73b1e0
(1) b10f6b42990de4c3bfb4dc5cdafa63199c0a1d3aac7703298514cf32757f7e57
...

HD Wallet
==================
Mnemonic:      predict abandon immune breeze movie divide seminar frost tragic
grunt lonely monitor
Base HD Path:  m/44'/60'/0'/0/{account_index}

Listening on localhost:8545

Take note of the Mnemonic seed, you'll need it when you setup MetaMask.

Next, perform

$ truffle compile
$ truffle migrate

which will deploy the contract onto your local ethereum blockchain.

You should see some output like the following:

Running migration: 1_initial_migration.js
  Deploying Migrations...
  ... 0xc5e7ab7a26714c17cacd2c7f1e40a80f1af61f99aeaea37e6375ea9f9a763bc5
  Migrations: 0xa7bed269f540f687e2ce16a028be1d97f710cee0
Saving successful migration to network...
  ... 0xa66a64cd76d4c454ab97f7da754737cf87c280534c13e9a72ec4725ad33d6246
Saving artifacts...
Running migration: 2_deploy_contracts.js
  Deploying ClevelandCoin...
  ... 0x0502076951d556e9e697b3807ea82099d65af7f2df2470b96ee89727aa88eb6c
  ClevelandCoin: 0xe727f76b086e0881809a8d834a6d7947aafbf344
Saving successful migration to network...
  ... 0xf65cafc6f8cdc4ca736d80265152543ca989f1a525d3ea5bc696cfa70458d542
Saving artifacts...

Take note of the line ClevelandCoin: 0xe727f76b086e0881809a8d834a6d7947aafbf344 This is the address that the ClevelandCoin contract was deployed to.

Open Chrome, navigate to https://wallet.ethereum.org. Open the MetaMask extension and "Restore from Seed Phrase", using the Mnemonic seed from above. Also, make sure that MetaMask is pointing at localhost:8545, which can be configured from the dropdown in the top-left corner of MetaMask's window.

In the ethereum wallet browser in Chrome, navigate to the "Contracts" tab, scroll to the bottom, and click "Watch Token". Copy the contract address that truffle migrate gave you (0xe727f76b086e0881809a8d834a6d7947aafbf344 in this example), and click "OK".

If all went well, you should see the ClevelandCoin token with a balance of 216,000,000 CLE!

Use MetaMask to create new accounts (which will match the accounts that testrpc displayed to you upon startup - thank the Mnemonic seed phrase for that), switch between them, and send tokens back and forth using the Ethereum Web Wallet.

From the project directory

$ truffle test

Please read CONTRIBUTING.md for details on our code of conduct, and the process for submitting pull requests to us.

We use SemVer for versioning. For the versions available, see the tags on this repository.

• Adam Gall - Initial work

See also the list of contributors who participated in this project.

This project is licensed under the MIT License - see the LICENSE.md file for details

• Crypto Cleveland