Accept crypto payments and receive guaranteed local-currency settlements at a locked exchange rate — zero FX risk, instant, on-chain.
FX Risk Eliminated
End-to-End Flow
Always On-Chain
The Problem
A merchant in Lagos sells a product for $100 USDC. By the time they convert it, the rate has slipped — they net only ₦138,000 instead of the expected ₦150,000. Margin gone.
Uncontrollable FX volatility is the single biggest reason merchants in emerging markets refuse to adopt Web3 payments.
Without SettlX
With SettlX
Why SettlX
The moment a merchant accepts, the NGN rate is cryptographically locked on-chain. The exact amount is guaranteed no matter what the market does.
Built on Arbitrum L2. Fast block times mean rate locking and payment confirmations happen in seconds.
USDC is held in trustless on-chain escrow. Payers are protected if rejected; merchants are protected from FX moves after acceptance.
Merchants register their Nigerian bank account. Admin settles the exact locked NGN amount directly to that account.
Every payment, rate lock, and status change is verifiable on-chain. Event logs preserve original references and bank details.
Arbitrum L2 transactions cost cents. SettlX is economically viable for everyday merchant use at any payment size.
The Flow
Four steps from stablecoin payment to guaranteed local-currency settlement.
The payer approves USDC spending and calls payMerchant(). USDC is held immediately in smart contract escrow.
Merchant sees the payment with a live NGN equivalent. Clicking 'Lock Rate' writes the current exchange rate on-chain — permanently.
On rate lock, USDC transfers from escrow to the SettlX treasury. The locked NGN amount is recorded in the PaymentAccepted event.
Admin sends the exact locked NGN amount to the merchant's registered bank account, then calls markAsPaid() on-chain to close the cycle.
Powered By
Arbitrum Stylus
Rust smart contracts on L2
Chainlink
USDC/USD price feeds
Privy
Embedded wallet auth
Wagmi + Viem
On-chain data & event logs
Accept crypto with guaranteed local-currency payouts.