NFTs you mine.
Proof you can verify.
Mintegra mints 5,550 NFTs through open proof-of-work mining on Robinhood Chain. Prices start at 0.0001 ETH and rise by 0.0001 every epoch — and 70% of every mint flows back to NFT stakers as dividends.
How Mintegra works
No whitelists, no insider allocations. Every NFT must be mined — open to anyone with a browser.
Epoch pricing
Ten epochs of 555 mints each — 5,550 total. The price rises 0.0001 ETH every epoch, flipping the instant an epoch's 555 mints complete — epoch 1 is the cheapest minting will ever be.
| Epoch | Mint price | Supply | Status |
|---|---|---|---|
| Epoch 1 | 0.0001 ETH | 555 | upcoming |
| Epoch 2 | 0.0002 ETH | 555 | upcoming |
| Epoch 3 | 0.0003 ETH | 555 | upcoming |
| Epoch 4 | 0.0004 ETH | 555 | upcoming |
| Epoch 5 | 0.0005 ETH | 555 | upcoming |
| Epoch 6 | 0.0006 ETH | 555 | upcoming |
| Epoch 7 | 0.0007 ETH | 555 | upcoming |
| Epoch 8 | 0.0008 ETH | 555 | upcoming |
| Epoch 9 | 0.0009 ETH | 555 | upcoming |
| Epoch 10 | 0.0010 ETH | 555 | upcoming |
Where every mint goes
Transparent by design — enforced by the contract, not a promise.
Fresh from the rock
Every card below is a real mint — pulled straight from the contract's Revealed tokens, artwork rendered from each mint's on-chain rarity seed.
What the stone carries
Every Mintegra NFT pays its holder — that part is written in code, not in this paragraph. What else a stone might carry is shared the way miners share anything: quietly. Every stone has two faces — turn one over.
Not everything was meant to be read today
Buried with the genesis of this project are sealed records — sealed by mathematics, not by promises. Some of the community will try to break them. One already can.
Three records were sealed before the first drill broke ground. They are real — protected by cryptography, not promises. One can be read today, if you can break it. Two open on their own schedule.
Questions miners actually ask
How does mining actually work?
Your browser grinds keccak-256 hashes — nonce after nonce — until one lands below the on-chain target. That winning hash is your proof-of-work. Your rarity and artwork are rolled right after the mint from a future block hash, so mining power buys attempts, not a chosen rarity. No queue, no whitelist: the same math for every miner.
What does a mint cost?
Epoch 1 costs 0.0001 ETH. Every 555 mints the epoch flips instantly and the price rises by a fixed 0.0001 ETH — linear, predictable, no auctions and no surprises.
CPU or GPU — which should I use?
Both mine the exact same challenge with the same rules; the GPU path (WebGPU) simply tries ~131,072 nonces per draw instead of the CPU batch size. If your device supports WebGPU, use it — otherwise CPU works everywhere.
What do I receive when I win?
A unique ERC-721 on Robinhood Chain: one-of-a-kind gemstone artwork derived from your winning hash, with on-chain attributes like mineral, crystal system, Mohs hardness and discovery depth. No two are alike — guaranteed by the hash itself.
How do dividends work?
70% of every mint flows into the dividend pool. Stake your NFTs (never your ETH) and you earn a pro-rata share, claimed whenever you like. Unstaking auto-claims everything you are owed.
Can I sell my NFTs?
Yes — the collection is standard ERC-721, so you can list on OpenSea the moment you mint. Your NFTs sit in your own wallet the whole time.
Which network does Mintegra live on?
Robinhood Chain mainnet (chain ID 4663). You need a little ETH there for gas; add the network to your wallet once and every page works with the same connection.
Is anything hidden or pre-allocated?
Nothing. Total supply is 5,550 across 10 epochs of 555, there is no team allocation, and every number on this site — price, epoch, pool, your balance — is read live from the contract, not typed by hand.