When a Margin Call Hits on Your Phone: Using a Multi‑Chain Wallet and Mobile App for Derivatives Trading
Imagine this: you wake up in New York, check your phone and see your perpetual futures position is close to liquidation. Gas prices on Ethereum spiked overnight, you need ETH for collateral, and the exchange withdrawal will take minutes. You have seconds to decide: transfer on‑chain from a standalone seed‑phrase wallet, use a custodial exchange…

