USYCvsUSDD
Circle USYC vs USDD — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
USYC — Circle USYC
USDD — USDD
30-day peg stability dotted line = target · both charts share one scale
What the last 30 days show
Over the last 30 days USYC supply moved -3.6% and USDD +7.9% — USDD grew faster. USDD held the tighter band: worst deviation 29 bps against 1328 bps.
Key differences
- USYC is roughly 2.0× larger than USDD by USD circulation value ($3.00B vs $1.51B).
- USYC ranks #8 while USDD ranks #13 among all tracked stablecoins.
- Both are pegged to the same currency (USD), so they compete directly for the same use cases.
- USYC is a fiat-backed stablecoin; USDD is crypto-backed. Different mechanism, different failure modes.
- Reserves differ — USYC holds tokenized us treasuries, USDD holds algo + trx collateral.
- USDD is deployed on 4 chains — much broader coverage than USYC's 2.
- Primary chain differs — most USYC supply lives on BSC, while most USDD supply is on Tron.
Full comparison table
| Metric | USYC | USDD |
|---|---|---|
| USD circulation value | $3.00B | $1.51B |
| Rank (by USD value) | #8 | #13 |
| Peg | USD | USD |
| Mechanism | fiat-backed | crypto-backed |
| Backing | Tokenized US Treasuries | Algo + TRX collateral |
| Chains deployed | 2 | 4 |
| Primary chain | BSC | Tron |
| Issuer | Circle | TRON DAO Reserve |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between USYC and USDD?
Both track USD, so they compete for the same use cases. USYC holds tokenized us treasuries; USDD holds algo + trx collateral. USYC ranks #8 by USD value and USDD ranks #13.
Which is bigger, USYC or USDD?
USYC is larger, with $3.00B in circulation vs $1.51B for USDD. That's roughly 2.0× the size.
Is USYC safer than USDD?
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight — none of which this page audits. USYC uses a fiat-backed model; USDD uses a crypto-backed one. Read each issuer's most recent reserve attestation before choosing.
Can I convert between USYC and USDD?
Yes. USYC and USDD 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 USYC or USDD?
The right choice depends on your use case. Consider: which chain do you need? USYC is available on 2 chains and USDD on 4. 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.