OUSDvsUSD0
Open USD vs Usual USD — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
OUSD — Open USD
USD0 — Usual USD
30-day peg stability dotted line = target · both charts share one scale
What the last 30 days show
OUSD held the tighter band: worst deviation 3 bps against 30 bps.
Key differences
- OUSD is roughly 1.3× larger than USD0 by USD circulation value ($698.8M vs $542.7M).
- OUSD ranks #17 while USD0 ranks #20 among all tracked stablecoins.
- Both are pegged to the same currency (USD), so they compete directly for the same use cases.
- Both are fiat-backed stablecoins, so the mechanism is not what separates them.
- USD0 reports tokenized us treasuries (usual) in reserve. We do not track a published reserve breakdown for OUSD.
- OUSD is deployed on 4 chains — much broader coverage than USD0's 2.
- Primary chain differs — most OUSD supply lives on Tempo, while most USD0 supply is on Ethereum.
Full comparison table
| Metric | OUSD | USD0 |
|---|---|---|
| USD circulation value | $698.8M | $542.7M |
| Rank (by USD value) | #17 | #20 |
| Peg | USD | USD |
| Mechanism | fiat-backed | fiat-backed |
| Backing | — | Tokenized US Treasuries (Usual) |
| Chains deployed | 4 | 2 |
| Primary chain | Tempo | Ethereum |
| Issuer | — | Usual |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between OUSD and USD0?
Both track USD, so they compete for the same use cases. USD0 holds tokenized us treasuries (usual). We track no published reserve breakdown for OUSD. OUSD ranks #17 by USD value and USD0 ranks #20.
Which is bigger, OUSD or USD0?
OUSD is larger, with $698.8M in circulation vs $542.7M for USD0. That's roughly 1.3× the size.
Is OUSD safer than USD0?
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight — none of which this page audits. Both use a fiat-backed model, so the difference sits in the issuer and the reserves rather than the design. Read each issuer's most recent reserve attestation before choosing.
Can I convert between OUSD and USD0?
Yes. OUSD and USD0 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 OUSD or USD0?
The right choice depends on your use case. Consider: which chain do you need? OUSD is available on 4 chains and USD0 on 2. 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.