Global Dollar vs USDD — side-by-side comparison of supply, chains, backing, and peg data.
| Metric | USDG | USDD |
|---|---|---|
| USD circulation value | $3.26B | $1.51B |
| Rank (by USD value) | #7 | #13 |
| Peg | USD | USD |
| Mechanism | fiat-backed | crypto-backed |
| Backing | Cash reserves (Paxos) | Algo + TRX collateral |
| Chains deployed | 6 | 4 |
| Primary chain | X Layer | Tron |
| Issuer | Global Dollar | USDD |
| CoinGecko | View → | View → |
Both USDG and USDD track USD, but they differ in backing and issuer. USDG is backed by cash reserves (paxos) while USDD is backed by algo + trx collateral. As of today, USDG ranks #7 and USDD ranks #13 among tracked stablecoins.
USDG is larger, with $3.26B in circulation vs $1.51B for USDD. That's roughly 2.2× the size.
Neither USDG nor USDD is inherently "safer" — safety depends on the specific backing composition, issuer transparency, redemption rights, and regulatory oversight. USDG uses fiat-backed backing model; USDD uses crypto-backed. Users should read each issuer's most recent reserve attestation before choosing.
Yes. USDG 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.
The right choice depends on your use case. Consider: which chain do you need? USDG is available on 6 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.