Ormine is a collection of NFT miners on Robinhood Chain. Every stock has its own vein: a pool of that stock's token held by the contract. Miners dig in one vein at a time and are paid in that vein's stock.

Miners

Every miner starts as a Tier I Digger, minted for 0.02 ETH, up to 10 per transaction and 10,000 in total. When you mint, you pick a vein and the miner goes straight there.

The daily release

Every 24 hours a vein releases 1% of what it held when that day began. The release flows evenly through the day and is split between the miners digging in the vein, by hashrate. Stock added to a vein during a day counts from the next one. If nobody is digging, that part of the release stays in the vein.

your share today = vein release today × your hashrate ÷ vein total hashrate

Example with made-up numbers: an NVDA vein holds 100 NVDA and releases 1% a day, 1 NVDA. Its miners have 4,000 H in total. A Tier II Miner (25 H) gets 25 ÷ 4,000 × 1 = 0.00625 NVDA that day. Upgraded to a Driller (60 H), the vein has 4,035 H and the same miner gets 60 ÷ 4,035 × 1 ≈ 0.0149 NVDA.

Because each day releases a share of what is left, a vein never runs dry on its own, and its release grows or shrinks with what is in it. Nothing here is a promise: what a miner gets depends on what's in its vein and who else is digging there.

Upgrades

An upgrade moves a miner one tier up: Digger → Miner → Driller → Rig. You pay in ETH, 0.002 ETH for every hash the miner gains, the same rate as a mint. So the steps cost 0.03 ETH, 0.07 ETH, 0.18 ETH.

The payment is split like a mint: 70% buys the stock of the vein the miner digs in (or is travelling to), 30% goes to the team. Earnings at the old hashrate are settled first. Upgrades stop while minting is paused and when the mine closes.

Moving

A miner can move to another vein. The trip takes 24 hours (rounded up to the next 10 minutes) and the miner doesn't dig on the way. What it earned in the old vein stays yours to claim. The trip exists so nobody can jump into a vein just before it is topped up.

Claiming

Claim whenever you like. Each vein is claimed on its own and pays in its own stock, so trouble with one stock never blocks another vein. If you sell a miner, everything it earned until the sale stays with you.

Where the ore comes from

• Miner sales and upgrades. 70% of every mint and upgrade is set aside for the miner's vein. 30% goes to the team.
• The set-aside ETH waits in the VeinFunder contract until it is swapped for the vein's stock on Uniswap, at most 2 ETH at a time, and only at a rate within 1.5% of Chainlink prices. The stock goes straight into the vein. Nobody can withdraw this ETH.
• Starting pool. The team seeds every vein before minting opens.
• Anyone can top up a vein. Nobody can take from one.

What the team can and can't do

The team can: add a vein, close a vein to new miners for good, pause minting and upgrades, set the treasury and royalties (up to 10%), choose the swap pool and price feed, and announce the closing of the mine.

The team can't: withdraw from a vein or from the ETH waiting for a vein, change the prices, hashrates, the daily release or the 70/30 split, or mint miners for free. These are fixed in the contracts.

If the mine closes

Closing is announced on-chain 7 days ahead and can be cancelled until then. When it happens, minting and upgrades stop and every vein with miners in it releases everything it holds at once, split by hashrate. Trips that would still be under way at that moment can't start in the last 24 hours. A vein nobody is digging in keeps its daily release for whoever arrives. Claims stay open forever.

Contracts

• OrmineMiners: 0xdFF077fAbD6d5F88Ce5bbfdFdF35Af7DCd110280 source ↗
• VeinFunder: 0x3E4864EfDaAdFcb057cB4187351383590D3b9917 source ↗

The contracts are open and verified, but they have not had an external audit. Read the risks before you mint.