No rig, no pool, no sign-up. A laptop, a server, any machine with a CPU. Run the miner, sign in with your wallet and the room pays you every minute for the work your machine proves.
Mined in red.
Install the miner, log in with your wallet, start mining. About five minutes from zero, and the guide below walks every step.
The open parts RUBRA runs on. Nothing here is a paid partnership.
RHRobinhood ChainWhere the $RUBRA token lives once it launches.
256SHA-256The proof of work. Slow to find, one hash to check.
JSNode.jsThe miner is a small Node package with no dependencies.
0xEVM walletsMetaMask, Rabby, OKX. Your wallet is your account.
CPUYour processorAny CPU on Windows, macOS or Linux. No graphics card.
Your processor does the work.
Every terminal you run becomes an Operator. It proves work with SHA-256, and every 60 seconds the round closes and pays each Operator by the work it proved.
Mined, not soldNew RUBRA only comes from mining. No presale of mined coins, nothing to buy to mine faster.
Any CPUThe miner tries millions of hashes for a rare result. Each one it finds is a share: proof your machine worked.
Paid every minuteA round closes every 60 seconds and its RUBRA is split between that round's Operators, by work.
A fixed mining poolMining never pays more than 50,000,000 RUBRA. The amount per minute halves every 30 days.
What you need
A computerWindows, macOS or Linux. A laptop is fine; a VPS works too.
Node.js 18+Free from nodejs.org. The first step of the guide shows how.
A walletMetaMask, Rabby or OKX Wallet in your browser. It is your account.
Zero to mining in six steps.
Never used a terminal? Follow the steps in order, copy each line with its button and paste it into your terminal. About five minutes.
1
Install Node.js
The miner runs on Node.js, a free program that runs JavaScript on your computer. Download the LTS version from nodejs.org and install it like any app.
Then open PowerShell: press the Windows key, type PowerShell, press Enter.
Then open Terminal: press ⌘ Space, type Terminal, press Enter.
On a server, install Node 18+ with your package manager or NodeSource, then connect over SSH.
node -v
You should see a version like v20.11.0. If it says "command not found", open a new terminal and try again.
2
Install the miner
One line installs the rubra command. It is a small package with no dependencies.
npm install -g /rubra-cli.tgz
Permission error? Put sudo in front and type your Mac password (nothing shows while you type).
Permission error? Put sudo in front, or use a Node version manager like nvm.
Scripts disabled? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, then try again.
3
Log in
This links the miner to your wallet. It shows a short code and opens this site in your browser.
rubra login
you ~ % rubra login
Your login code KQ7M-3XPA
Opening your browser…
No browser on a server? Make a key in your dashboard, then run rubra login --paste.
4
Approve it
A page opens with the same code. Check the codes match, press Connect wallet, sign, then press Authorize.
Is signing safe? It is a free message, not a transaction. The miner gets a key that can mine and nothing else.
5
Start mining
Start the miner. It uses every core but one and shows a live dashboard. Press Ctrl + C to stop.
rubra mine
Human check. Now and then it asks a small sum like 12 + 7. Type the answer and press Enter. Want room for other work? rubra mine -t 2 uses two threads.
6
Check your balance
Run rubra status, or open your dashboard with the same wallet: balance, terminals and, once the token is live, withdrawals.
The server sends your miner a random challenge. Your CPU searches for a number that makes sha256(challenge + number) start with enough zeros. Finding it takes millions of tries; checking it takes one.
Job16 random bytes and a target in zero bits, sized for your machine. Each job is used once.
SearchEvery thread tries different numbers, so no two cores repeat work.
VerifyThe server redoes one SHA-256. If the zeros are there, the share counts 2bits of work.
rubra minesimulated
0/16 zero bits
Real SHA-256, running on this page at an easy demo target. The miner does the same at full speed on every core.
Challenge
–
Number tried
0
sha256
–
Best so far
0 zero bits
Laptop example, 4 threads
Speed
1.2 MH/s
Difficulty
24 bits
Work per share
224
About one share every 20 s, each worth 16.8 million hashes.
Server example, 32 threads
Speed
19 MH/s
Difficulty
28 bits
Work per share
228
Also one share every 20 s, each worth 16× more. Faster machines earn more, fairly.
Every share, in the open.
Straight from the RUBRA server, refreshed every 15 seconds.
0Active operators
Wallets that found a share in the last 10 minutes.
0.00H/sNetwork hashrate
All operators together, estimated from their shares.
578.70/minRUBRA per minute
Split every round between that round's operators, by work.
0.000%Of the mining pool paid
Out of 50,000,000 RUBRA mining can ever pay.
Every round and every operator.
Latest rounds 60 seconds each
Round
Ended
Operators
Shares
Paid out
No rounds mined yet.
Leaderboard by RUBRA earned
#
Operator
Shares
Earned
Last active
No operators yet. Be the first.
Everything, in detail.
Fixed reward, fair split.
Each round releases the same amount however many operators show up, and that amount halves every 30 days. More machines cannot print more RUBRA; they share the same slice. Rounds where nobody mines release nothing.
Now
578.7/min
Mined so far
0
Next halving
–
Total paid by mining over the first twelve months. Each bend is a halving.
Questions people ask.
Does it cost anything?
No. Mining is free and signing in is a free message. The only cost is your computer's electricity while it mines.
Do I need a graphics card?
No. RUBRA is mined on the CPU, the regular processor every computer has. A laptop works; more cores mine faster.
Can the miner touch my wallet?
No. The miner gets an API key that can only submit work for your wallet. It cannot move funds. Withdrawals need a fresh signature from your wallet, and you can revoke any terminal from your dashboard.
How much will I earn?
It depends on your share of the network's work. If your machine does 5% of all the work in a round, you get 5% of that round's RUBRA. Nobody can promise a number, and RUBRA is not an investment.
Will it slow my computer down?
By default it uses every core but one. To keep more room, start it with fewer threads: rubra mine -t 2. Stop at any time with Ctrl + C.
Can I mine on a VPS or several computers?
Yes. Install the miner on each and log in with the same wallet. On a server without a browser, make a key in your dashboard and run rubra login --paste. Up to 3 wallets can mine from one network at a time.
When can I withdraw?
Balances are kept by the RUBRA server until the RUBRA token is live on Robinhood Chain. Then the dashboard's withdraw button sends your balance as tokens, one RUBRA for one token.
Why does it ask me maths questions?
It is a human check against bots: a small sum when you start and about every 30 minutes. Type the answer and mining continues.