USDCvsUSX
USD Coin vs Solstice USX — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
USDC — USD Coin
USX — Solstice USX
30-day peg stability dotted line = target · both charts share one scale
What the last 30 days show
Supply moved almost identically over the last 30 days: USDC -1.6%, USX -2.1%. USDC held the tighter band: worst deviation 5 bps against 10 bps.
Key differences
- USDC is roughly 142.5× larger than USX by USD circulation value ($72.21B vs $506.6M).
- USDC ranks #2 while USX ranks #20 among all tracked stablecoins.
- Both are pegged to the same currency (USD), so they compete directly for the same use cases.
- USDC is a fiat-backed stablecoin; USX is crypto-backed. Different mechanism, different failure modes.
- Reserves differ — USDC holds cash & t-bills, USX holds overcollateralized cdp.
- USDC is deployed on 154 chains — much broader coverage than USX's 1.
- Primary chain differs — most USDC supply lives on Ethereum, while most USX supply is on Solana.
Full comparison table
| Metric | USDC | USX |
|---|---|---|
| USD circulation value | $72.21B | $506.6M |
| Rank (by USD value) | #2 | #20 |
| Peg | USD | USD |
| Mechanism | fiat-backed | crypto-backed |
| Backing | Cash & T-bills | Overcollateralized CDP |
| Chains deployed | 154 | 1 |
| Primary chain | Ethereum | Solana |
| Issuer | Circle | — |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between USDC and USX?
Both track USD, so they compete for the same use cases. USDC holds cash & t-bills; USX holds overcollateralized cdp. USDC ranks #2 by USD value and USX ranks #20.
Which is bigger, USDC or USX?
USDC is larger, with $72.21B in circulation vs $506.6M for USX. That's roughly 142.5× the size.
Is USDC safer than USX?
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight — none of which this page audits. USDC uses a fiat-backed model; USX uses a crypto-backed one. Read each issuer's most recent reserve attestation before choosing.
Can I convert between USDC and USX?
Yes. USDC and USX both trade on major centralized and decentralized exchanges. Since both track USD, the exchange rate is typically very close to 1:1. Direct swap protocols on Ethereum, Solana, and other chains offer the tightest spreads.
Should I choose USDC or USX?
The right choice depends on your use case. Consider: which chain do you need? USDC is available on 154 chains and USX on 1. What backing do you prefer? What's your integration surface (exchanges, DeFi protocols, payment providers)? Both have deep liquidity, so market cap alone shouldn't decide it.