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UnstableNfts is an NFT marketplace on Arc. Collections list here, holders trade them, and every payment settles in USDC. The market is non-custodial software: you hold your own wallet, your assets move only on transactions you sign, and nothing here can act on your behalf.

• Listing moves the NFT into the escrow contract until it sells or you delist it. Delisting is always available, even if the market UI is paused.
• The market takes a per-token approval when you list — it never asks for approval over your whole collection.
• Buying pulls the exact listing price in USDC from your wallet and transfers the NFT in the same transaction. You approve exactly the amount you spend, never an unlimited allowance.
• A sweep is a batch buy: several listings settle in one transaction, capped at 50.
• Sale proceeds are pushed to the seller as the sale settles. If a transfer to a recipient fails, the amount is credited inside the contract and can be claimed from My Portfolio at any time.

The market charges a 2% fee on sales, taken from the sale amount before proceeds reach the seller. Listing, delisting, minting, and claiming carry no market fee — you pay network gas only. The fee rate is set on-chain with a hard ceiling of 5% written into the contract; the current rate is always readable from the contract itself.

Collections may additionally declare an ERC-2981 royalty (Arcane Golems declares 2.5%). Royalties are advisory for third-party platforms; this market does not add them on top of its fee.

Listing a collection on the market costs a flat 100 USDC submission fee, escrowed with the submission and capped on-chain at 1,000 USDC. Approval forwards the fee to the market; a rejection refunds it in full. The current fee is always readable from the registry contract.

The market contract is pausable by its operator as an emergency brake; a pause blocks new listings and purchases but never blocks delisting your NFTs or claiming credited proceeds.

Art renders best when it is sized for the surfaces that show it. Formats: PNG, WebP, or JPG; registry submissions accept IPFS URLs only.

• Collection banner — 1600×400 (4:1). Market and home cards crop it to a wide strip anchored to the top: keep the subject centered, expect the side edges to trim.
• Collection avatar / thumbnail — 512×512 square. Shown small (80px on the collection header) and slightly zoomed, so bold, centered subjects read best.
• Token art — square, 1024×1024 or larger. Cards render 256px thumbnails; the detail view shows the full image.

The site runs under three short, plainly written documents. Read them before trading — the risk disclosure especially.