Service 02

Crypto and bank payment gateway development — built to settle correctly, every time.

We build crypto payment gateways on Bitcoin, Ethereum and Tron, and integrate bank, card and UPI gateways for Indian and international banks. Settlement, reconciliation, webhooks and the merchant tooling around them.

Discuss a project

Crypto: BTC · ETH · TRX — other chains on request
Bank & card: Indian and international gateways
Interfaces: REST · webhooks · merchant dashboard
Stack: C# / .NET · Node.js · PostgreSQL

What we build

Two rails, one integration.

Crypto payment gateway

Accept BTC, ETH and TRX (plus USDT on ERC-20 and TRC-20) in your own infrastructure. Per-invoice deposit addresses, confirmation tracking, expiry and under/over-payment handling, automatic sweeping to cold or treasury wallets, and fiat-equivalent pricing at the moment of payment.

Address generation per invoice, HD-wallet based
Confirmation policy per chain; mempool detection for instant UI feedback
Webhooks with signatures and retries; REST API for your product
Merchant dashboard: invoices, settlements, exports
Other chains added per project

Bank & card gateway integration

Integration of Indian and international bank gateways, card processors and UPI into your platform — checkout, recurring billing, payouts and refunds — with the reconciliation layer that keeps your ledger and the bank's statement in agreement.

Hosted checkout or tokenised fields — card data stays off your servers
UPI collect and intent flows, net-banking, wallets
Payouts and refunds with two-person (maker–checker) approval
Daily reconciliation against settlement files
Multi-currency and multi-entity accounting hooks

How a payment moves

Every state explicit, every event idempotent.

The same state machine drives both rails, so your product integrates once and sees the same events whether the customer paid in USDT or by card.

Security & compliance

Built for the audit, not just the demo.

Keys stay with you: gateways run in your infrastructure, under your custody policy
Card data handled by hosted fields or tokenisation — minimal PCI DSS scope, documented
Signed webhooks, replay protection and idempotency keys on every write
Maker–checker approval on payouts and refunds; full audit log
Data in transit and at rest encrypted; ICEBERG available for sensitive channels
KYC/AML provider hooks where your licence requires them

Typical engagements

Exchange or wallet

Deposit and withdrawal gateway on BTC/ETH/TRX with sweeping, monitoring and a treasury dashboard.

Broker CRM

Client deposits by card, UPI or crypto credited to MT4/MT5 accounts through the Manager API, with reconciliation.

SaaS or marketplace

Subscriptions, invoices and payouts across bank and crypto rails behind one API and one merchant console.

Questions

Asked before every project.

Which cryptocurrencies do you support?

Bitcoin, Ethereum (including ERC-20 tokens such as USDT) and Tron (including TRC-20 USDT) are live. Other chains are added on request as part of the project.

Do we hold the keys or do you?

You do. Gateways are deployed in your infrastructure with your wallets and your custody policy. We build the software; we do not take custody of funds.

Which bank gateways have you integrated?

Indian bank and card gateways and international processors. Named integrations are shared under NDA on a call, along with the reconciliation approach used for each.

How do you handle failed or partial payments?

Every payment has an explicit state machine — created, detected, confirmed, settled, expired, refunded — with idempotent webhooks and a reconciliation job that catches anything the webhook missed.

Is it PCI DSS compliant?

Card data never touches your servers in our integrations: hosted fields or the gateway's tokenisation carry it, which keeps your PCI scope to the smallest questionnaire. We document the scope with the delivery.

Can you add it to an existing product?

Yes. Most payment work is integration into a platform that already exists — a broker CRM, a subscription product, an exchange. We fit the gateway to it rather than the other way round.

Need money to move through your product?

Tell us the flows, the currencies and the banks. We will come back with an architecture and a price.

Start the conversation