The modern Unicorn Grinder — fully onchain. Grind 🦄 into w🍖, or ungrind w🍖 back into whole 🦄. Place bids, asks, and fill orders — all transparent, all on Ethereum.
Descended from the original 2016 Unicorn Meat Grinder, but this one runs in reverse too. No backend, no matching engine, no middlemen.
Order placement uses two transactions when needed: Approve token (if allowance is insufficient), then Place Order.
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Connect wallet to see your orders
Approvals: maker approves token before placeOrder; taker approves counter-token before fillOrder.
IERC20(sellToken).approve(market, sellAmount); market.placeOrder(sellToken, buyToken, sellAmount, buyAmount);
IERC20(order.buyToken).approve(market, buyAmountToPay); market.fillOrder(orderId, sellAmountToTake);
IERC20(order.buyToken).approve(market, order.buyAmountRemaining); market.fillOrderFull(orderId);
market.cancelOrder(orderId);
market.getOrder(orderId); returns (maker, sellToken, buyToken, sellAmountTotal, buyAmountTotal, sellAmountRemaining, buyAmountRemaining, createdAt, status)
market.getOrderBook(UNICORN, W_MEAT); returns [1, 3, 7, ...]
Contract: View on Etherscan
The grinder is simple. Four steps. Grind or ungrind — no middlemen.
Connect your Ethereum wallet (MetaMask, WalletConnect, etc).
Approve the market contract to transfer the token you want to sell (🦄 or w🍖).
Place a new order or take an existing one. Partial fills are supported.
Tokens transfer directly between maker and taker. No escrow beyond the order itself.
