This small project will continuously generate random ethereum private keys and log any that have a balance on the ethereum mainnet.

In other words, this project will stress test your CPU and not find any ethereum.

You must have a fully synchronised ethereum node for this script to run against.

I've tested against both geth and OpenEthereum.

Start geth with the arguments: --ws --ws.api eth,net,web3, OpenEthereum exposes the required apis by default.

It should preferably be running on localhost to reduce latency as much as possible.

It will be very slow running against a --syncmode light node to the point where it could be faster refreshing the page at https://keys.lol.

To install dependencies run:

$ npm install

And to start the script run:

$ npm start

You'll see output like the following:

$ node main.js
Checked: 722 @ 722/s, Found: 0
Checked: 1562 @ 840/s, Found: 0
Checked: 2422 @ 860/s, Found: 0
Checked: 3342 @ 920/s, Found: 0
Checked: 4262 @ 920/s, Found: 0
Checked: 5192 @ 930/s, Found: 0
Checked: 6142 @ 950/s, Found: 0

If any accounts with balance are found (they won't be), you can see them logged in the 'wallets' file:

$ cat wallets
cat: wallets: No such file or directory

When I run this on my PC (i7-6700K), I get a check rate of around 1500/s.

On an n2-standard-4 GCP instance I see ~1000/s.

You can tweak the CONCURRENCY variable at the top of main.js to control how many promises can be pending at once.