We build payment infrastructure that accepts cryptocurrency and settles in stablecoins. Payment gateways, invoicing, and integration for modern businesses.
Blockchain payments offer faster settlement, lower fees for cross-border transactions, and access to a global customer base that holds value in cryptocurrency. But integrating crypto payments into existing business workflows requires purpose-built infrastructure that handles wallet detection, multi-currency acceptance, real-time exchange rates, and settlement in the currency your business operates in. Arthiq builds this payment infrastructure.
Our payment gateway development goes beyond simple wallet-to-wallet transfers. We build complete payment systems with invoicing, subscription management, payment status tracking, webhook notifications for your backend, and settlement in stablecoins or fiat through partner exchanges. The result is a payment experience that is as reliable and predictable as traditional payment processors.
Having built InvoiceRunner as our own product, we bring direct experience with the challenges of blockchain payment infrastructure — handling chain congestion, managing transaction confirmation times, dealing with token approval flows, and providing the reconciliation data that accounting teams need.
Our payment gateway contracts handle multi-token acceptance across ETH, USDC, USDT, DAI, and custom tokens on every supported chain. Contracts calculate payment amounts based on real-time exchange rates from oracle feeds, verify payment completeness, and emit events that trigger backend processing.
For recurring payments and subscriptions, we implement token approval-based pull payments where the merchant contract can charge the customer at agreed intervals. These contracts include grace periods, retry logic for failed charges, and cancellation mechanisms that protect both parties.
We also build escrow contracts for marketplace payments, milestone-based release contracts for service payments, and split-payment contracts that distribute incoming payments across multiple recipients according to configurable ratios. Each contract type addresses specific payment patterns common in different business models.
Our payment gateways provide REST APIs that integrate with your existing backend — create payment requests, check payment status, list transaction history, and receive webhook notifications when payments are confirmed. The API interface is designed to feel familiar to developers who have worked with Stripe or PayPal.
For e-commerce platforms, we build embeddable payment widgets that display as part of your checkout flow. The widget handles wallet connection, token selection, amount calculation at current rates, and transaction submission. Your backend receives a webhook when the payment is confirmed on-chain.
We also build payment dashboards for merchants — showing incoming payments, settlement status, revenue analytics, and reconciliation reports. These dashboards provide the financial visibility that business operators need to manage their crypto payment operations effectively.
Most businesses want to receive payments in stable value, not volatile crypto. We implement automatic conversion to stablecoins at the time of payment — when a customer pays in ETH, the gateway automatically swaps to USDC through a DEX, and the merchant receives stablecoin settlement. This eliminates price risk for the merchant.
Treasury management features include multi-signature withdrawal authorization, scheduled sweep transactions that consolidate small payments, and reporting that provides the data needed for accounting and tax compliance. We can also integrate with fiat off-ramp services for businesses that need to convert stablecoins to traditional currency.
For businesses operating across multiple chains, our gateway consolidates payments from all chains into a unified treasury. Cross-chain bridge integration moves funds to the merchant's preferred chain for settlement and withdrawal.
Blockchain payments shine for cross-border transactions where traditional payment processors charge high fees and impose long settlement delays. Our payment gateways accept payments on Ethereum, Polygon, Arbitrum, Base, and Optimism, giving customers the flexibility to pay from whichever chain they hold funds on.
For international businesses, crypto payment gateways eliminate the intermediary banks, currency conversion fees, and multi-day settlement windows that make traditional cross-border payments expensive and slow. Payments settle in minutes, and fees are a fraction of traditional wire transfer costs.
Arthiq builds payment infrastructure that makes crypto payments practical for real businesses. Our own InvoiceRunner product demonstrates our commitment to this space. Our Singapore-based team brings both blockchain engineering and payment systems expertise to every gateway project. Contact founders@arthiq.co to discuss your payment infrastructure needs.
We build payment gateways that accept cryptocurrency and settle in stablecoins. Fast, reliable, and designed for real business operations.