Description

Payzum lets your WooCommerce store accept cryptocurrency and stablecoin payments (USDC/USDT and
more, across multiple chains). Payments are non-custodial: funds settle directly to your own
wallet — Payzum never takes custody.

At checkout the buyer is redirected to a secure Payzum hosted checkout (QR + deposit address, live
status). Your order is marked paid automatically from a signed IPN webhook, so a closed browser tab
never loses a paid order.

Features:

Crypto & stablecoin checkout (USDC/USDT, multi-chain).
Non-custodial — settles to your wallet.
Hosted checkout — no card data or crypto handling on your server.
Signed IPN webhooks (HMAC-SHA-512) verify every payment server-side.
No chargebacks.

External services

This plugin connects to the Payzum API to create payment invoices and receive payment
notifications. It is required for the gateway to work.

What it sends: when a buyer chooses Payzum at checkout, the plugin sends the order total,
currency, order id and your store’s callback/return URLs to Payzum to create the invoice.
Payment confirmations arrive as signed webhooks from Payzum; the plugin verifies their
signature before updating the order. No customer personal data is sent by the plugin.
When: only when the gateway is enabled and a buyer pays (or the store owner tests the
connection from the settings screen).
Endpoints: https://merchant.payzum.com (production) or https://staging.payzum.com
(staging), as selected in the plugin settings.
Service provider: Payzum — terms, privacy.

Credits

Coin icons are from the open-source cryptocurrency-icons set (MIT license, spothq);
a few network icons are original monograms bundled with this plugin.

Installation

Upload the payzum-crypto-payments folder to /wp-content/plugins/, or install the zip via
Plugins Add New Upload.
Activate the plugin.
Go to WooCommerce Settings Payments Payzum and enable it.
Paste your API key and Webhook secret from your Payzum dashboard.
Copy the IPN URL shown on the settings screen into your Payzum webhook settings. The IPN
signature header is fixed (x-nowpayments-sig) — no configuration needed.
Save. Place a test order to confirm the flow.

FAQ

Is it custodial?: No. Funds settle directly to your own wallet.
Which coins are supported?: USDC/USDT and other crypto across supported chains. Which coins your store accepts is configured
in your Payzum dashboard (Merchants Settings Accepted tokens); the buyer picks one of those
on the Payzum checkout.
Do I need to write code?: No. Enter your API key and webhook secret and you are live.

Reviews

There are no reviews for this plugin.

Contributors & Developers

“Payzum Crypto & Stablecoin Payments for WooCommerce” is open source software. The following people have contributed to this plugin.

payzum

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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

1.5.2

Renamed the internal settings-migration function so its name reflects what it does
(it removes settings made obsolete in 1.1.0 and renders nothing). No functional change.
The internal version constant now matches the plugin version (1.5.1 left it at 1.5.0).

1.5.1

Plugin URI now points at the plugin’s own repository, so it differs from the Author URI as
the plugin directory requires. No functional change.

1.5.0

The IPN now verifies the amount and currency paid against the order before it is completed.
Nothing was compared before, so a payment for any amount completed the order in full; a mismatch
now puts the order on hold for review instead.
An amount that cannot be read (missing, empty, or not a number) counts as a mismatch. The first
version of this check treated an unreadable amount as “nothing to compare” and completed the
order unverified.
A payment reference whose order suffix does not match the order it claims to pay is rejected.
The transition to complete is serialised with a database lock, so two deliveries arriving at once
cannot both complete the order.
Lock names are scoped to the site’s database, table prefix and plugin. Lock names are global to
the MySQL server, so the previous ones collided: two stores on one server blocked each other, and
this plugin generated the same name as the Easy Digital Downloads and Paid Memberships Pro
gateways.

1.4.0

Rebuilt on the official payzum/payzum-php SDK (bundled in vendor/): HTTP client, webhook
signature verification, decimal-exact amounts and the payment-status vocabulary now live in one
tested library instead of plugin code.
IPN deliveries are deduplicated by their event id — retries can no longer add duplicate notes or
re-fire the paid transition.
New Environment setting (production / staging) for end-to-end testing against the sandbox.
Order totals are sent with every digit intact (no float rounding on the wire).
Requires PHP 8.1 (the SDK’s floor).

1.3.0

Cart & Checkout blocks support; HPOS compatibility declared.

1.2.0

Modal and inline render modes via the Payzum widget; crypto currency mode
(pricing_mode: "direct").

1.1.0

The buyer picks the coin on the Payzum hosted checkout (pay_currency: "all"); dropped the
in-store coin picker.
IPN signature read from the fixed x-nowpayments-sig header.
Zero-total orders complete without an invoice; repeated IPNs no longer duplicate order notes;
recurring signups are refused instead of being charged once.

1.0.0

Initial release: hosted-checkout gateway with signed IPN verification.