USDDvsUSX
USDD vs Solstice USX — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
USDD — USDD
USX — Solstice USX
30-day peg stability dotted line = target · both charts share one scale
What the last 30 days show
Over the last 30 days USDD supply moved +7.9% and USX -2.1% — USDD grew faster. USX held the tighter band: worst deviation 10 bps against 29 bps.
Key differences
- USDD is roughly 3.0× larger than USX by USD circulation value ($1.51B vs $506.6M).
- USDD ranks #13 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.
- Both are crypto-backed stablecoins, so the mechanism is not what separates them.
- Reserves differ — USDD holds algo + trx collateral, USX holds overcollateralized cdp.
- USDD is deployed on 4 chains — much broader coverage than USX's 1.
- Primary chain differs — most USDD supply lives on Tron, while most USX supply is on Solana.
Full comparison table
| Metric | USDD | USX |
|---|---|---|
| USD circulation value | $1.51B | $506.6M |
| Rank (by USD value) | #13 | #20 |
| Peg | USD | USD |
| Mechanism | crypto-backed | crypto-backed |
| Backing | Algo + TRX collateral | Overcollateralized CDP |
| Chains deployed | 4 | 1 |
| Primary chain | Tron | Solana |
| Issuer | TRON DAO Reserve | — |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between USDD and USX?
Both track USD, so they compete for the same use cases. USDD holds algo + trx collateral; USX holds overcollateralized cdp. USDD ranks #13 by USD value and USX ranks #20.
Which is bigger, USDD or USX?
USDD is larger, with $1.51B in circulation vs $506.6M for USX. That's roughly 3.0× the size.
Is USDD 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. Both use a crypto-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 USDD and USX?
Yes. USDD 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 USDD or USX?
The right choice depends on your use case. Consider: which chain do you need? USDD is available on 4 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.