Kovarra — Payment infrastructure that nobody can freeze

The math

Their fees never stop. Yours do.

Gateways cost 1–4% of every sale, forever. Kovarra is $2,500 once. Drag your volume:

Your monthly sales volume $100,000/month

$12,000–$48,000 what a gateway takes from you every year, forever

3–11 weeks until the $2,500 license has paid for itself — the higher their fee, the faster

$57,500–$237,500 yours instead of theirs, over 5 years

Assumes 1–4% all-in gateway cost: processing fees plus conversion spreads and withdrawal fees — high-risk categories pay the top end. No Kovarra fees ever; you pay only your own server (~$6/mo).

Build vs buy

Months of payment code, or one afternoon.

Money-handling bugs cost real money. This logic is already tested.

Build it yourself

3–6 months of engineering before the first live payment
Every rounding error and missed chain reorg is your loss
Ongoing maintenance as chains and providers change
No test suite, no docs, no one to call

Buy Kovarra

One command to install — you're live 30 minutes after the code arrives
82 automated checks on every payment path
Underpays, overpays, expiries, reorgs — handled and tested
Full source code + 12 months of updates

Convinced it can't be trusted blindly? Good. Verify the security claims →

Security

It can receive. It cannot spend.

No private keys. No signing code. Enforced by an automated tripwire on every build:

✓ non-custody check passed: no key material or signing code in source.

The server derives receiving addresses from the public keys you provide, so funds land straight in your own wallet. And you don't have to take our word for it: the entire payment engine and its 82-test suite are published, free, before any payment — read the exact code that touches money. The dashboard even shows your first addresses so you can match them against your own wallet before going live.

Read the engine source Wallet-setup guide

What's in the box

Everything a payment company has. Minus the company.

Hosted checkoutMobile-first payment page under your brand — QR, exact amounts, live status. Fully white-label.

USDT + USDCTron (TRC-20) and Base (ERC-20) — the two dominant stablecoin rails. More chains ship as updates.

Admin dashboardPayments, invoices, filters, detail views with block-explorer links, CSV export.

Payment linksSell with zero code: create a link, share it anywhere, every visitor gets a fresh invoice.

REST API + keysCreate and query invoices from your own software. Hashed API keys, rate-limited public endpoints.

Signed webhooks7 event types, HMAC-SHA256 signatures, automatic retries for 12+ hours, dead-letter visibility.

WooCommerce pluginOrders flip to Processing automatically when payment confirms on-chain.

Fresh address per invoiceDerived from your public key — with a dashboard proof matching them to your own wallet.

Battle-tested engine82 automated tests: underpays, overpays, expiry races, chain reorgs. Integer-only money math.

Sales ledger + invoicesEvery purchase recorded with the buyer's email and tx hash; printable invoices per sale.

Testnet + simulatorFull test mode with a payment simulator — try everything with zero real funds. You're using it in our demo.

One-command installFresh server → live checkout with automatic TLS in 30 minutes. No telemetry, no phone-home, ever.

Pricing

Three ways to own it.

Code in your inbox within 24–48 hours — live 30 minutes after that. 12 months of updates included. Pay in full, or 50/50: half now, half after you've verified the source yourself.

Self-install license

You deploy it on your own server with our docs.

$2,500

One-time. No fees after, ever.

Full source code — verify every claim yourself
USDT (Tron) + USDC (Base), hosted checkout, admin, API, webhooks
WooCommerce plugin
One-command installer + full documentation
12 months of updates

Managed deployment

We install it on your VPS and domain, hand you the keys.

$4,500

One-time. We do the work, you own the result.

Everything in the self-install license
Deployed to your server + domain with TLS, by us
Wallet setup + first live payment together
Server hardening (SSH keys, firewall) included
12 months of updates

Partner license

Resell Kovarra to your own clients, under your own brand.

$25,000

For agencies & deployers — closes person-to-person

Everything in Managed deployment
Resale rights: deploy for unlimited clients under your brand
10 client license keys included — further keys at −40%
Fully white-label — your clients never see us
Direct partner line + updates for all your deployments

Exactly what you receive — Kovarra v1.0

The complete v1.0 source repository (payment server, hosted checkout, admin dashboard, Tron + Base watchers, REST API, webhooks, WooCommerce plugin, one-command installer, full documentation) · your signed license key · 12 months of updates · setup support via Telegram (@Kovarra_xyz) and email · delivered to your email within 48 hours — a contractual guarantee, backed by the Terms of Sale.

After you buy

What happens next

Pay in USDT or USDC through this same checkout — in full, or 50/50 (half now, half after you've verified the source).
Your purchase is recorded with your email the moment it confirms on-chain.
Within 24–48 hours, the full source code, your signed license key, and the setup guide land in your inbox.
Go live, your way:

Self-installRun one command on your server — you're taking payments 30 minutes after the code arrives.

ManagedWe install everything on your server and domain, then walk your first payment through with you.
12 months of updates — and the software is yours to keep, forever.

For the skeptics — which should be all of you

Buy without trusting us.

New domain. Anonymous team. Irreversible money. You should be skeptical — so the deal is built to work even if you don't believe a word we say:

01Read the engine before payingThe complete payment engine and all 82 tests are published at /source — the exact code that touches money, free, no signup.

02Run the whole thing firstMessage @Kovarra_xyz for a full evaluation copy — the complete software, on your own machine, working end to end. Inspect it, run it, break it. Then decide.

03Split the paymentPay half → receive the full source → verify for up to 7 days → pay the rest only when satisfied. Offered on every package.

04Bring your own auditorHave any developer or security reviewer inspect the code before it touches real money — we'll answer their technical questions directly.

05Test the real flow firstThe live demo runs the actual product end-to-end on testnet — pay it with free test coins or one click of the simulator.

0648-hour delivery, guaranteedDelivery within 48 hours of your payment confirming is a contractual commitment in the Terms of Sale — not a marketing line.

Compare

"Non-custodial" is only as strong as your ability to verify it.

A gateway can claim non-custodial and still run on their server, with closed code, behind an account they control. That's a company in your payment flow — one that can cut you off, disappear, or change the rules. Kovarra removes the company entirely.

	Kovarra	"Non-custodial" gateways	Custodial gateways	DIY open-source
Who holds your money	You, always	You — but routed via their server	The processor	You, always
Account that can be frozen or banned	None — no company in the loop	Usually required, revocable	Required, revocable	None
Runs on your own server	Yes — no phone-home	No — hosted on theirs	No	Yes
If the vendor disappears	Keeps running — it's yours	Your checkout stops	Funds & checkout at risk	Keeps running
Can you verify the non-custody claim	Yes — full source code	No — closed source, trust the label	n/a	Yes
Cost	One-time license	Often 0.5%+ per sale	1–4% of every sale, forever	Free, your time
Setup effort	30 min, one command	Minutes	Minutes	Days–weeks to build & maintain

The test is simple: can you read the code, and does it run on your own machine? If not, "non-custodial" is a marketing word — you're still trusting a company to hand you the right address, stay online, and not change the rules. Kovarra is the only column where you can prove it yourself.

FAQ

Questions merchants ask.

How do my customers actually pay?

You send them a checkout page (a payment link, a WooCommerce order, or via the API). They pick USDT or USDC, scan a QR code or copy the address, and pay from any wallet. The page shows "Paid ✓" the moment it confirms on-chain — and the money is already in your wallet. Try it now with the live demo above.

Which coins and networks are supported?

USDT on Tron (TRC-20) and USDC on Base (ERC-20) today — the two most widely used, lowest-fee stablecoin rails. More chains ship as free updates.

Can I see the source code before paying?

Yes — three ways. The complete payment engine and its 82-test suite are published at /source, free, right now. Serious buyers can request a full evaluation copy via Telegram — the complete software, running on their own machine, before a cent changes hands. And every package offers 50/50 split payment: half up front, the full source in your hands, up to 7 days to verify (yourself or with your own auditor), the rest when you're satisfied.

Is it really non-custodial? How do I know?

Yes — by design, not by promise. The software stores only your public keys or receiving addresses (never a private key or seed phrase) and has no code that can send funds. An automated check fails the build if signing code ever appears. You get the full source to verify it, and the dashboard shows your first receiving addresses so you can match them against your own wallet. See the wallet-setup guide →

Do I need to be technical to run it?

Self-install: if you can copy-paste one command into a server, you can run it — the docs walk you through every step. Not comfortable with that? Choose Managed deployment and we install it on your server and domain, set up your wallet, and do your first live payment with you.

What exactly do I get when I buy?

The complete source code (checkout, dashboard, blockchain watchers, WooCommerce plugin), a one-command installer, full documentation, and a signed license key. Managed deployment adds us installing and launching it for you. Everything arrives by email within 24–48 hours of your payment confirming on-chain — and installing takes about 30 minutes from there.

What does it cost to run?

Only your own server (about $5–6/month) and a domain (about $10/year). We take nothing per sale — no percentage, no monthly fee. That's the whole point: at any real volume it pays for itself in weeks, then runs free forever.

What about updates?

12 months of updates are included — new chains and features, fixes, and security patches. The software never expires; after 12 months you can renew updates or simply keep running the version you have. It's yours.

What is the refund policy?

Delivery within 48 hours is contractually guaranteed — the Terms of Sale entitle you to a full refund in the unlikely event we ever missed it. Because the product is delivered as complete source code, all sales are otherwise final once delivered — which is exactly why the live demo exists: test everything before you buy.

Who is behind Kovarra?

The team is private, deliberately — for the same reason our customers value this product. You aren't asked to trust us: you get the full source code, it runs on your own server, it settles to your own wallet, and every claim on this page can be verified in the code itself.

Payment infrastructure that nobody can freeze.