xCoin · MetalDAG · post-quantum from block 1
Learn to mine by mining.
Press start and this browser does real MetalDAG proof-of-work against the live mainnet pool. Paste your address and the pool pays you, 0% fee, straight to your own key. When you want real hashrate, NerdMiner runs the same work on your Mac's GPU.
Network right now
loading from superknet.com…
Every number on this page is live from the chain. Nothing here is simulated.
Paste an address to mine to the pool for real. Leave it blank to just try it (learn mode, no rewards). Get an address →
STATUS: browser pool mining is LIVE on xCoin mainnet. Real MetalDAG shares to pool.xcoinminer.com, 0% fee, rewards paid by the pool to your own xpa1z… address. Blank address = learning benchmark, no rewards. A tnx1z… address mines testnet.
What your machine is actually doing
the whole thing, in four stepsGet a job
The pool hands your browser a block template: the last block's hash, the transactions to include, and a target the hash has to beat.
Walk the DAG
For every guess, MetalDAG reads 64 random 128-byte items from a 4 GiB dataset and mixes them. The cost is memory traffic, not arithmetic.
Submit shares
Any hash under the pool's easier target is a share: proof you did work. Shares are how the pool measures you.
Find a block
A hash under the network target is a block. Solo keeps all 50 XAT. Shared splits it by shares, paid inside the block itself.
MetalDAG, plainly
Bitcoin's puzzle fits in 80 bytes, so a chip that does nothing but SHA-256 wins by ten million to one. MetalDAG makes the puzzle touch a 4 GiB dataset on every guess. No cache smaller than the dataset helps, and the speed limit becomes memory bandwidth.
That is the one thing Apple Silicon is world-class at: one pool of very fast memory shared by CPU and GPU. A single-purpose chip gets no shortcut. The full deep dive, with benchmarks.
Why this browser is slow, on purpose
The browser uses the light path: a 32 MiB cache and recomputing dataset items on demand. A few hundred hashes per second. Real, correct, and a thousand times slower than the Mac app.
It exists so anyone can see mining happen without installing anything. When you want hashrate, the next section is for you.
Three ways in. Pick your level.
01 · Browser
This page. One tab, one click. Learn mode or real shares to your address.
Start above02 · NerdMiner for Mac
Native Metal GPU miner. Holds the full 4 GiB dataset in unified memory. An M3 Pro does about 8 MH/s at the draw of a light bulb.
# paste your address, pick a mode, walk away
./NerdMiner xpa1z… --pool pool.xcoinminer.com:3333 --worker mymac --mode shared
Get NerdMiner 4.003 · Watch it anywhere
iPhone, Apple Watch, browser. NerdMiner MD in your toolbar, the iPhone app to start and stop your rig, and a buzz on your wrist when you find a block.
NerdMiner MDGet an address
Your address starts with xpa1z. That prefix means post-quantum: every spend is signed with ML-DSA-65 and the network rejects anything else. Nothing to migrate later.
xPay on iPhone makes one. Or the wallet CLI:
./xcoin-wallet-cli new
./xcoin-wallet-cli address → xpa1z… (mainnet)
Card wallets: an NTAG 424 DNA tap unlocks the key, which never touches a networked device.
Solo or shared
Solo is a lottery ticket. Rare, but a block is all 50 XAT and it is yours.
Shared is a steady drip. Every block the pool finds is split among miners by proven work and paid as outputs in that block's own coinbase, straight to each address. The pool never holds your coins, not for a second.
Both are 0% fee. The pool at pool.xcoinminer.com:3333 runs against a public mainnet node in New York and works whether or not the founder's Mac is on.
NerdMiner MD. Your rig in the toolbar.
Chrome · Brave · Edge · FirefoxWatches the real miner
Live hashrate in the badge, a desktop notification the moment you find a block, who's online at MineDifferent, and the #rigs chat. It does not mine in the browser. Your Mac does the work; this is the window.
Three steps
1 Run NerdMiner 4.0. It prints a companion token at startup.
2 chrome://extensions → Developer mode → Load unpacked → the nerdminer-md folder. Firefox: about:debugging → Load Temporary Add-on.
3 Options → paste the token. Stats appear in two seconds.
Sign in with your address
No passwords anywhere. Click Sign in, then run NerdMiner login <challenge> on your Mac. Your wallet signs a challenge with its post-quantum key. Chat unlocks after your first accepted share on the pool. Bots would have to mine to spam.