Deposits and withdrawals
Connect a wallet and send ETH to the treasury address. The server checks the transaction on-chain: it must be addressed to the treasury, confirmed, and sent from your wallet. Only then is your balance credited, and the transaction hash is recorded so the same deposit can never be credited twice.
Withdrawals go the other way. The amount is debited first, recorded, then paid out from the treasury key. You can only withdraw what you deposited plus what you realised on settled trades, so a balance can never leave the treasury without a matching history behind it.
Arc Finance is a synthetic trading venue. The house is the counterparty on every position, and the money is real ETH.
Perpetuals, options and listed pairs share one balance, one deposit flow and one settlement sweep. Prices come from public feeds, the rules are fixed numbers you can read on this site, and nothing is hidden inside a contract you cannot inspect.
Prices and markets
Meme coin prices come from DexScreener, with GeckoTerminal as a fallback for pools that are only minutes old. Pools are ranked by real 24 hour volume rather than claimed liquidity, so a fake pool with an absurd price cannot set your mark.
Tokenised stocks such as AAPL, AMD and AMZN are read from their Chainlink price feeds on Robinhood Chain and converted to ETH at the live ETH/USD rate. Tickers without a published feed are simply not listed until one exists.
Risk and settlement
A deposit is credited once: the transaction hash is the primary key and is claimed before the balance moves. A balance never moves by read then write: the arithmetic happens inside the row lock and refuses to go negative. A position settles once: both the close route and the liquidation sweep claim the row before paying anything out.
A settlement sweep runs every few seconds. It marks every open position against the live price and closes any past its liquidation level, and it settles expired options at intrinsic value. You can never lose more than the margin or premium you posted.