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Know What You Are Signing
Robinhood Chain in two minutes
Robinhood Chain is a layer-2 network built on Arbitrum, with chain ID 4663. Fees are paid in ETH and are tiny (fractions of a cent); blocks come about every 100 milliseconds. A transaction is final in practice once included, and settles on Ethereum within minutes. Add the network in your wallet the first time MIMO asks; the address you use elsewhere works here too, as a separate account.
What a Robinhood Stock Token is, and is not
A Stock Token is an ERC-20 token issued by Robinhood Assets (Jersey) Limited that follows a share's price. Holding it does not make you a shareholder of the company: your rights are the ones in Robinhood's terms. The contract lets the issuer pause transfers, block addresses, upgrade the code and burn tokens from any holder; MIMO reads these powers from the contract and shows them on every token. Prices come from Chainlink feeds where one exists (they follow US market hours), otherwise from the token's pool. Browse Stock Tokens.
What MIMO checks before your wallet signs
MIMO quotes your trade on Uniswap's v2, v3 and v4 pools on chain and picks the best output. It then builds the transaction for Uniswap's Universal Router and decodes it again: your wallet must receive the output, the input must be exactly your amount, the minimum must come from your slippage, the pools must be the quoted ones, and nothing else may ride along (no transfer, no fee cut). Then it runs the exact transaction against the current chain state. Only then does your wallet ask you. If any step fails, the order stops and says why.
Approvals, Permit2 and why MIMO asks twice when you sell
To sell a token, a contract must be allowed to move it. MIMO approves exactly the amount you sell to Permit2 (never unlimited), then asks you to sign a Permit2 message that lets only Uniswap's router take that amount within 30 minutes. Both are checked before you see them. Old approvals from any app are listed on the Wallet page with a revoke button.
Reading the risk flags
Every token gets individual flags, each with its source: owner powers found in the code (mint, pause, block list, tax), an upgradeable proxy, source verification on Sourcify, a buy-transfer-sell simulation that catches honeypots and taxes, pool fee and hooks, liquidity and holder concentration. High and Unknown flags need your acknowledgment before a trade; a few block it outright (the token is paused, your wallet is blocked, it cannot be sold, or the pool fee is above 5%). Unknown is never treated as safe.
New tokens and what can go wrong
Anyone can create a token and a pool in seconds. Many launches lose most of their value within hours; some can be bought but not sold. MIMO's feed shows pools minutes old with what it could verify, but a clean scan is not a promise: an owner can change a contract's behaviour later, and thin pools move hard on small trades. Size positions as money you can lose. Open the feed.
How live bots and trigger orders work
A live bot or a live Limit, Stop or OCO order watches the price on MIMO's server. When its rule or price is reached, it prepares the trade and puts it in Ready to sign; your wallet signs it there, after the same quote, limits and simulation as any swap. MIMO never signs. The limit is time: while you are away nothing is signed, so a stop protects you only once you sign it. Trading for you while you are away would take scoped session keys (limited by token, amount and time), an audited engine and incident drills, which do not exist yet. Paper mode runs the same rules at real quotes and never moves funds. Set up a bot.
Every fee, before you sign
A swap pays the pool's fee (inside the quote, shown per route) and the network fee in ETH (estimated before you sign, read from the receipt after). MIMO charges no fee of its own. Price impact is shown separately: it is not a fee, it is how far your order moves the price.