A GARDEN, NOT A WAREHOUSE

When you buy, USDG moves from your wallet to the seller’s and the token moves from theirs to yours, in the same transaction. The market contract is never the sender and never the recipient of either. It has no balance, no vault and no withdrawal function, because there is nothing in it to withdraw.

What you grant instead is an allowance, and you can revoke it at any moment without asking this site for permission. A listing is an offer to sell, not a lock on your asset: your token stays in your wallet until somebody actually buys it, and you can sell it somewhere else in the meantime.

Every other marketplace keeps its orders in a database and signs them off chain, because on Ethereum storing an order costs more gas than most listings are worth. On Robinhood Chain a listing costs about two hundredths of a cent, so the book can simply be state.

That is not a technicality. It means this market has no backend to run, no server to trust, and no set of orders that quietly disappears the day somebody stops paying for a host. Read the contract and you have read the entire market.

A floor computed from every row in a database includes listings whose seller sold the token elsewhere last week, revoked their approval, or set an expiry that has passed. Those are not prices. They are the reason a headline floor and the cheapest thing you can actually buy are so often different numbers.

Here the contract answers, for every listing, whether it can be filled and why not, and the floor is built only from the ones that can. When a listing has gone bad, the item says so in plain words rather than showing a price that is not real.

Sweeping ten listings means asking ten strangers to hold still for the length of one block, and they will not. So a sweep skips what has gone stale and buys the rest, reporting each line it passed over. A cancellation while your transaction was in flight costs you the gas of a skip, not the whole purchase.

The market takes 0.5% of a sale, and the contract cannot be changed to take more than 2.5%: that ceiling is compiled in, not a policy. Creator royalties are honoured up to 10%; a collection asking for more than that is paid 10% and the trade still settles, which is what stops one hostile contract making every sale of it a donation.

ERC-1155 collections are readable but not tradeable: quantity semantics touch every part of an order book and are not worth doing badly. Prices are in USDG only. And the trait index reads the first twelve hundred tokens of a collection, so on the very largest ones the counts say what they were measured across rather than pretending to be totals.