Why USDC
One dollar, always.
USDC is a digital dollar. 1 USDC is always $1, so nothing you pay or earn
swings in value. Network fees on Base cost cents.
When you pay, it's held in escrow until you approve the work, and comes back
to you if the order is cancelled.
Technical details
USDC is issued by Circle. Base is an Ethereum layer 2. Escrow only accepts
USDC on Base, so whatever you start with has to end up in your wallet as
USDC on Base.