USDSvsA7A5
Sky Dollar vs A7A5 — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
USDS — Sky Dollar
A7A5 — A7A5
30-day peg stability dotted line = target
Peg history unavailable.
What the last 30 days show
Over the last 30 days USDS supply moved +2.9% and A7A5 +18.8% — A7A5 grew faster.
Key differences
- USDS is roughly 12.9× larger than A7A5 by USD circulation value ($7.02B vs $544.7M).
- USDS ranks #3 while A7A5 ranks #19 among all tracked stablecoins.
- USDS is pegged to USD while A7A5 tracks RUB — they serve different currency markets.
- USDS is a crypto-backed stablecoin; A7A5 is fiat-backed. Different mechanism, different failure modes.
- Reserves differ — USDS holds backed by dai/usdc, A7A5 holds rub deposits in banks.
- USDS is deployed on 7 chains — much broader coverage than A7A5's 2.
- Primary chain differs — most USDS supply lives on Ethereum, while most A7A5 supply is on Tron.
Full comparison table
| Metric | USDS | A7A5 |
|---|---|---|
| USD circulation value | $7.02B | $544.7M |
| Rank (by USD value) | #3 | #19 |
| Peg | USD | RUB |
| Mechanism | crypto-backed | fiat-backed |
| Backing | Backed by DAI/USDC | RUB deposits in banks |
| Chains deployed | 7 | 2 |
| Primary chain | Ethereum | Tron |
| Issuer | Sky | — |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between USDS and A7A5?
USDS is USD-pegged and A7A5 tracks RUB, so they serve different currency markets and their market caps are not directly comparable. USDS holds backed by dai/usdc; A7A5 holds rub deposits in banks.
Which is bigger, USDS or A7A5?
USDS is larger, with $7.02B in circulation vs $544.7M for A7A5. That's roughly 12.9× the size.
Is USDS safer than A7A5?
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight — none of which this page audits. USDS uses a crypto-backed model; A7A5 uses a fiat-backed one. Read each issuer's most recent reserve attestation before choosing.
Can I convert between USDS and A7A5?
Yes. USDS and A7A5 both trade on major centralized and decentralized exchanges. Since they track different currencies (USD vs RUB), conversion follows the underlying FX rate. Direct swap protocols on Ethereum, Solana, and other chains offer the tightest spreads.
Should I choose USDS or A7A5?
The right choice depends on your use case. Consider: which chain do you need? USDS is available on 7 chains and A7A5 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.