Pay for mobile data in USDC.

Yes. GeSIM accepts USDC on Solana. Settlement is on-chain, activation is instant, and no fiat rail is involved at any step. Your wallet signs a single transaction; the eSIM provisions in under a minute.

For users coming from the privacy angle, the crypto rail is not just a payment method — it's how we remove the identity layer entirely. No card, no statement, no chargeback trail.

USDC on Solana at launch. We chose Solana for two reasons that matter for this product:

• Sub-cent fees. Per-MB or per-day metering on Ethereum L1 would cost more in gas than in data. Solana keeps the math sane.
• Sub-second confirmations. Your eSIM activates before the wallet UI finishes its animation.

Multi-chain support — SOL, plus Base and Arbitrum via cross-chain bridges — is on the roadmap. We'll surface those rails behind the same payment screen, so the choice of chain stays a UX detail, not a learning curve.

Your wallet signs a deposit transaction to a metered escrow program. As you use data, the program releases value to GeSIM's MVNO partner in micro-payments. You can withdraw the unused balance at any time.

The flow in three lines:

1. Deposit. One wallet signature into a Solana program. The program holds your USDC.
2. Meter. Usage is proven with zero-knowledge proofs against the escrow. No raw session data hits us.
3. Settle. The program pays out per-period to the carrier. Your unused balance stays withdrawable.

If you want the engineering detail, see how we provision an eSIM in 60 seconds.

Payment rails and identity model, side by side:

Adjacent topics from the journal and product pages: