Whitepaper - Ethereum Classic With Cover

Ethereum Classic Documentation, Release 0.1
> miner.hashrate
712000
After you successfully mined some blocks, you can check the ether balance of your etherbase account. Now
assuming your etherbase is a local account:
> eth.getBalance(eth.coinbase).toNumber();
'34698870000000'
In order to spend your earnings on gas to transact, you will need to have this account unlocked.
> personal.unlockAccount(eth.coinbase)
Password
true
You can check which blocks are mined by a particular miner (address) with the following code snippet on the
console:
function minedBlocks(lastn, addr) {
addrs = [];
if (!addr) {
addr = eth.coinbase
}
limit = eth.blockNumber - lastn
for (i = eth.blockNumber; i >= limit; i--) {
if (eth.getBlock(i).miner == addr) {
addrs.push(i)
}
}
return addrs
}
// scans the last 1000 blocks and returns the blocknumbers of blocks mined by your coinbase
// (more precisely blocks the mining reward for which is sent to your coinbase).
minedBlocks(1000, eth.coinbase);
//[352708, 352655, 352559]
Note that it will happen often that you find a block yet it never makes it to the canonical chain. This means when
you locally include your mined block, the current state will show the mining reward credited to your account,
however, after a while, the better chain is discovered and we switch to a chain in which your block is not included
and therefore no mining reward is credited. Therefore it is quite possible that as a miner monitoring their coinbase
balance will find that it may fluctuate quite a bit.
1.6.4 GPU mining
Hardware
The algorithm is memory hard and in order to fit the DAG into memory, it needs 1-2GB of RAM on each GPU. If
you get Error GPU mining. GPU memory fragmentation? you do not have enough memory. The
GPU miner is implemented in OpenCL, so AMD GPUs will be ‘faster’ than same-category NVIDIA GPUs. ASICs
and FPGAs are relatively inefficient and therefore discouraged. To get openCL for your chipset and platform, try:
• AMD SDK openCL
• NVIDIA CUDA openCL
Ubuntu Linux set-up
For this quick guide, you’ll need Ubuntu 14.04 or 15.04 and the fglrx graphics drivers. You can use NVidia drivers
and other platforms, too, but you’ll have to find your own way to getting a working OpenCL install with them,
such as Genoil’s ethminer fork.
68 Chapter 1. Contents