Stablecoin payment infrastructure
Accept crypto, settle fiat the same day — one elegant API on regulated rails.
Bitcoin, Ethereum, and the stablecoins your customers actually use — settled to fiat or held on balance, your choice.
Modular building blocks you can compose into any payment flow — turnkey or fully white-labeled.
Accept crypto and stablecoin payins, send payouts, and reconcile everything in real time across 40+ assets and 10+ blockchains.
Explore payments →Embedded fiat-to-crypto conversion with local payment methods in 30 EEA countries. Your brand, our rails and licensing.
Explore ramps →Multi-currency accounts that hold, convert, and move USDC, USDT, and EURC alongside fiat — with instant internal transfers.
Explore accounts →Segregated, insured custody with MPC key management, configurable governance policies, and full proof-of-reserves reporting.
Explore custody →Pay contractors, sellers, and creators in 30 EEA countries in minutes, not days. One API call, thousands of recipients.
Explore payouts →Issue, manage, and redeem tokenized assets on public or permissioned chains with built-in compliance controls.
Explore tokenization →Sign up and get instant sandbox access with test assets. Complete business verification in parallel — most teams clear it in days.
Drop in our SDKs or hosted checkout. Configure assets, networks, and payout rules from the dashboard — no crypto expertise needed.
Flip the switch and start moving money in 30 EEA countries under our regulatory umbrella, with real-time monitoring built in.
Stablecoin settlement clears in seconds where correspondent banking takes days. Median settlement time on Coinsonnet is 4.2 seconds.
Customers paying out to sellers and contractors in 30 EEA countries cut their cross-border fees by up to four-fifths versus card and SWIFT rails.
Automatic reconciliation, real-time reporting, and webhook-driven workflows replace the spreadsheet work finance teams do by hand.
| Bank wires | Card rails | Coinsonnet | |
|---|---|---|---|
| Settlement time | 1–5 business days | T+2 payout | Seconds, 24/7 |
| Cross-border cost | 3–7% all-in | 2.5–4% + FX | Under 1% |
| Reach | Correspondent network, banking hours | Card-acquiring markets only | 30 EEA countries, no banking hours |
| Chargebacks | Recalls possible | 0.5–1% typical | None — settlement is final |
Embed crypto products into your app without becoming a crypto company.
Add stablecoin settlement and crypto acceptance to your merchant stack.
Pay out global sellers instantly and cut cross-border fees by up to 80%.
Offer regulated digital asset trading and custody to your customers.
Frictionless funding, in-game economies, and compliant fiat off-ramps.
Pay international teams in stablecoins with local off-ramp options.
A single, elegant API for every product. Idiomatic SDKs, instant sandbox, webhooks for every event, and documentation your engineers will actually enjoy.
import { Coinsonnet } from "@coinsonnet/sdk";
const sonnet = new Coinsonnet(process.env.API_KEY);
const payment = await sonnet.payments.create({
amount: "2500.00",
currency: "USDC",
network: "base",
customer: "cus_9f2k1x",
metadata: { invoice: "INV-2026-0611" }
});
// → settled in 4.2s, webhook delivered
console.log(payment.status); // "confirmed"Compliance isn't a feature we added. It's the foundation we built on.
100% of customer funds segregated from operating accounts, with insured qualified custody.
Real-time transaction monitoring, sanctions screening, and travel-rule compliance on every transfer.
Operate across the EEA under our authorisation once granted — or bring your own licences and use our infrastructure.
Compliance keeps the regulator satisfied. Security keeps your money and data safe — and it gets the same engineering attention as settlement.
“With Coinsonnet we went from a stablecoin whitepaper to live payouts in 31 countries in under six weeks. The API is the cleanest we've integrated.
“Settlement that used to take three days now takes four seconds. Our sellers noticed before our finance team did.
“They handle licensing, custody, and compliance so we can focus on product. It's the closest thing to a fast-forward button our roadmap has ever had.
Support
No ticket black holes. Payment engineers sit on the support desk, and enterprise plans come with named contacts around the clock.
Once our authorisation is granted, most customers will operate under Coinsonnet's regulatory umbrella across the EEA. If you hold your own licences, you can use our infrastructure in a self-managed model today.
40+ assets including BTC, ETH, USDC, USDT, and EURC, across 10+ networks such as Ethereum, Base, Solana, Polygon, and Tron. New networks are added based on customer demand.
All customer funds are held in segregated accounts, separate from Coinsonnet's operating funds, with MPC-based qualified custody, insurance coverage, and routine proof-of-reserves attestations.
A sandbox account is instant. Most teams reach production in 2–6 weeks depending on flow complexity. No-code payment links and hosted checkout can go live the same day.
Simple volume-based pricing with no setup fees or monthly minimums on the starter tier. Enterprise plans include dedicated support, custom SLAs, and volume discounts.
Talk to our team about your payment flows, or jump straight into the sandbox.