$USDC and $FDUSD are both fiat-backed reserve stablecoins designed to peg to $1, backed by reserves such as cash or short-term U.S. Treasuries. One easy mistake is to interpret “pegged to $1” as “always equal to $1”: the peg is a target of the mechanism, while the actual trading price can still deviate slightly with buying and selling pressure. Actual redemption, in turn, depends on the reserves and redemption channels.
When comparing these two coins, focus on three things: how much detail is disclosed about the reserve composition, who the custodian is, and what the redemption mechanism specifies. The more transparent the reserves, the clearer the custodian and issuer, and the more specific the redemption thresholds and settlement rules, the easier it is to judge whether a deviation is normal volatility or a trust issue. Looking only at the peg promise won’t reveal these differences.
When comparing these two coins, focus on three things: how much detail is disclosed about the reserve composition, who the custodian is, and what the redemption mechanism specifies. The more transparent the reserves, the clearer the custodian and issuer, and the more specific the redemption thresholds and settlement rules, the easier it is to judge whether a deviation is normal volatility or a trust issue. Looking only at the peg promise won’t reveal these differences.