Ethereum Smart Contract

An Ethereum Smart Contract that will allow your contracts to get up-to-date ETH/USD, ETH/EUR, and ETH/GBP prices. Using this contract doesn't require any contract calls or any extra setup. Many people ask how to get the rate of ETH in USD from within a contract, fiat contract is here to do this for you. This smart contract doesn't only do USD, but it also lets you use EURO, and GBP.

Contract Connection

An Ethereum Smart Contract that will allow your contracts to get up-to-date ETH/USD, ETH/EUR, and ETH/GBP prices. Using this contract doesn't require any contract calls or any extra setup. Using solidity you can use the testnet or use the mainnet to get current crypto prices.

price = FiatContract(0x8055d0504666e2B6942BeB8D6014c964658Ca591) // MAINNET ADDRESS
price = FiatContract(0x2CDe56E5c8235D6360CCbb0c57Ce248Ca9C80909) // TESTNET ADDRESS (ROPSTEN)

Full Example

This is a full example of an Ethereum Smart Contract using Fiat Contract. This contract as a function "DoCall()" that requires $5.00 USD in Ether.

pragma solidity ^0.4.15;

contract FiatContract {
  function ETH(uint _id) constant returns (uint256);
  function USD(uint _id) constant returns (uint256);
  function EUR(uint _id) constant returns (uint256);
  function GBP(uint _id) constant returns (uint256);
  function updatedAt(uint _id) constant returns (uint);
}

contract Example {

    FiatContract public price;
    event NewPayment(address sender, uint256 amount);

    function Example() {
        price = FiatContract(0x8055d0504666e2B6942BeB8D6014c964658Ca591);
    }

    // returns $5.00 USD in ETH wei.
    function FiveETHUSD() constant returns (uint256) {
        // returns $0.01 ETH wei
        uint256 ethCent = price.USD(0);
        // $0.01 * 500 = $5.00
        return ethCent * 500;
    }

    function DoCall() external payable returns (string) {
        require(msg.value==FiveETHUSD());
        NewPayment(msg.sender, msg.value);
        return "you paid $5.00 USD!!!";
    }

}

Cryptocurrency Values

eth = price.USD(0); // this will respond $0.01 USD worth of ETH
btc = price.USD(1); // PENDING - this will respond $0.01 USD worth of BITCOIN (converted into ETH)
ltc = price.USD(2); // PENDING - this will respond $0.01 USD worth of LITECOIN (converted into ETH)
omg = price.USD(4); // PENDING - this will respond $0.01 USD worth of OMISEGO (converted into ETH)
eos = price.USD(5); // PENDING - this will respond $0.01 USD worth of EOS (converted into ETH)
tex = price.USD(6); // PENDING - this will respond $0.01 USD worth of TENX (converted into ETH)
rep = price.USD(7); // PENDING - this will respond $0.01 USD worth of AUGUR (converted into ETH)
qtm = price.USD(8); // PENDING - this will respond $0.01 USD worth of QTUM (converted into ETH)
bat = price.USD(9); // PENDING - this will respond $0.01 USD worth of GOLEM (converted into ETH)
zrx = price.USD(10); // PENDING - this will respond $0.01 USD worth of OXPROJECT (converted into ETH)
sts = price.USD(11); // PENDING - this will respond $0.01 USD worth of STATUS (converted into ETH)
ban = price.USD(12); // PENDING - this will respond $0.01 USD worth of BANCOR (converted into ETH)

Some cryptocurrencies are not inserted into the Fiat Contract yet. Since we update each crypto every hour, we need donations to help support the gas costs.

More Examples

USDcent = price.USD(0);  // this will respond $0.01 USD worth of ETH
EUROcent = price.EUR(0); // this will respond $0.01 EURO worth of ETH
GBPcent = price.GBP(0);  // this will respond $0.01 GBP worth of ETH

oneDollar = USDcent * 100;   // value is $1.00 USD in ETH
fiveDollars = USDcent * 500; // value is $5.00 USD in ETH
sevenEuros = EUROcent * 700; // value is $7.00 EURO in ETH
tenPounds = GBPcent * 1000;  // value is $10.00 GBP in ETH

oneBTC = price.ETH(1); // this will respond amount of ETH for 1 BITCOIN
oneLTC = price.ETH(2); // this will respond amount of ETH for 1 LITECOIN

threeBTC = oneBTC * 3; // responds the value of 3 Bitcoin in ETH.

Donate

Fiat Contract is updated every 1 hour on the Ethereum Mainnet blockchain. Doing all these contract calls require gas to be spent which is in ETH. The contract is supported by blockchainers that use this contract to easily fetch USD, EURO, GBP conversions.

Donate ETH to address: 0x004F3E7fFA2F06EA78e14ED2B13E87d710e8013F