Coin	OKX	Crypto.com	Kraken
ETH	4.5% APY	4.0% APY	4.25% APY
SOL	6.0% APY	5.5% APY	5.8% APY
ATOM	10% APY	-	9% APY
USDT	5% APY	3% APY	-

KYC requirements

OKX

Difficulty: Easy–medium.
Typical time: 10–30 minutes for basic; up to 24 hours for full.
Documents: Passport or national ID, selfie, sometimes proof of address (utility bill or bank statement).

Crypto.com

Difficulty: Easy.
Typical time: 10–20 minutes; some cases up to 1 business day.
Documents: Passport or ID, selfie, proof of address if requested.

Kraken

Difficulty: Medium.
Typical time: 20–30 minutes; up to a few days for higher limits.
Documents: Passport or ID, selfie, proof of residence (utility bill, bank statement).

Make sure to confirm the latest KYC rules and supported countries on each platform’s official website before applying.