learnercys/MetaCoin

MetaCoin

This project is based on Truffle Quickstart Tutorial.

Interacting with the contract

You can interact with the contract using the console in the following ways:

Note: As [Interacting with the contract] says "We're using web3.eth.accounts[] in these examples, which is an array of all the accounts generated by the mnemonic. So, given the addresses generated by our mnemonic above, specifying web3.eth.accounts[0] is equivalent to the address 0x627306090abab3a6e1400e9345bc60c78a8bef57."

• Check the metacoin balance of the account that deployed the contract:

MetaCoin.deployed().then(function(instance) {
        return instance.getBalance(web3.eth.accounts[0]);
    })
    .then(function(value){
        return value.toNumber()
    });

• See how much ether that balance is worth (and note that the contract defines a metacoin to be worth 2 ether:

So, in other words the total 10000 MetaCoins worth 20000 ethers. 1:2.

MetaCoin.deployed().then(function(instance) {
        return instance.getBalanceInEth(web3.eth.accounts[0]);
    }).then(function(value){return value.toNumber()});

• Transfer some metacoin from one account to another:

MetaCoin.deployed().then(function(instance) {
    return instance.sendCoin(web3.eth.accounts[1], 500);
});

• Check the balance of the account that received the metacoin:

MetaCoin.deployed().then(function(instance) {
    return instance.getBalance(web3.eth.accounts[1]);
})
.then(function(value) {
    return value.toNumber();
});

• Check the balance of the account that sent the metacoin:

MetaCoin.deployed().then(function(instance) { 
    return instance.getBalance(web3.eth.accounts[0]);
})
.then(function(value) {
    return value.toNumber();
});

Truffle develop accounts:

Accounts:
(0) 0x627306090abab3a6e1400e9345bc60c78a8bef57
(1) 0xf17f52151ebef6c7334fad080c5704d77216b732
(2) 0xc5fdf4076b8f3a5357c5e395ab970b5b54098fef
(3) 0x821aea9a577a9b44299b9c15c88cf3087f3b5544
(4) 0x0d1d4e623d10f9fba5db95830f7d3839406c6af2
(5) 0x2932b7a2355d6fecc4b5c0b6bd44cc31df247a2e
(6) 0x2191ef87e392377ec08e7c08eb105ef5448eced5
(7) 0x0f4f2ac550a1b4e2280d04c21cea7ebd822934b5
(8) 0x6330a553fc93768f612722bb8c2ec78ac90b3bbc
(9) 0x5aeda56215b167893e80b4fe645ba6d5bab767de

Private Keys:
(0) c87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3
(1) ae6ae8e5ccbfb04590405997ee2d52d2b330726137b875053c36d94e974d162f
(2) 0dbbe8e4ae425a6d2687f1a7e3ba17bc98c673636790f1b8ad91193c05875ef1
(3) c88b703fb08cbea894b6aeff5a544fb92e78a18e19814cd85da83b71f772aa6c
(4) 388c684f0ba1ef5017716adb5d21a053ea8e90277d0868337519f97bede61418
(5) 659cbb0e2411a44db63778987b1e22153c086a95eb6b18bdf89de078917abc63
(6) 82d052c865f5763aad42add438569276c00d3d88a2d062d36b2bae914d58b8c8
(7) aa3680d5d48a8283413f7a108367c7299ca73f553735860a87b08f39395618b7
(8) 0f62d96d6675f32685bbdb8ac13cda7c23436f63efbb9d07700d8669ff12b7c4
(9) 8d5366123cb560bb606379f90a0bfd4769eecc0557f1b362dcae9012b548b1e5

Mnemonic: candy maple cake sugar pudding cream honey rich smooth crumble sweet treat

Dictionary

Ganache

Ganache is a desktop application to launch your personal blockchain. Ganache can be a more easy-to-understand tool for those new to Ethereum and the blockchain, as it displays much more information up-front.