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Payzum Crypto & Stablecoin Gateway for Paid Memberships Pro

Accept crypto & stablecoin payments (USDC, USDT, multi-chain) for Paid Memberships Pro with Payzum — non-custodial crypto payment gateway plugin for WordPress memberships

by Payzum · github.com/payzum-dev/paid-memberships-pro-payzum · website

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Install

No release zip yet. The repository archive installs, but the folder name will carry the branch suffix and updates will not flow:

wp plugin install https://github.com/payzum-dev/paid-memberships-pro-payzum/archive/refs/heads/main.zip
Readme github.com/payzum-dev/paid-memberships-pro-payzum ↗

Payzum for Paid Memberships Pro — Accept Crypto & Stablecoin Payments (USDC, USDT)

Accept cryptocurrency and stablecoin payments (USDC, USDT and more, multi-chain) for Paid Memberships Pro memberships through Payzum — non-custodial: funds settle directly to your own wallet, Payzum never takes custody. No chargebacks, no card networks, no PCI surface.

  • Plugin: payzum-pmpro · Version: 1.3.0 · License: GPL-2.0-or-later
  • Requires: WordPress ≥ 5.6, Paid Memberships Pro, PHP ≥ 8.1

How it works

  1. The member picks the crypto option at checkout and pays on a hosted checkout page (QR code + deposit address, live status) — or in an embedded widget, see render modes below — where they choose the coin and chain. No wallet or card data touches your server; card and billing fields are stripped from the PMPro checkout when Payzum is selected.
  2. Crypto confirmation is asynchronous, so the membership level is granted from Payzum's signed server-to-server IPN webhook, never from the member's browser return — a closed tab never loses a paid membership, and a partial payment never opens the gate.
  3. Every webhook is verified with HMAC-SHA-512 over the raw request bytes (constant-time compare, replay window) before a single field of it is read. Redelivered webhooks are deduplicated and the settled amount and currency are re-checked against the order's initial payment before the level is granted — on a membership gateway that is the difference between a partial settlement and a full year of access.

Features

  • Stablecoin-first: USDC and USDT across multiple chains (Polygon, Ethereum, Arbitrum, Base, Optimism, Tron, Solana and more), plus major cryptocurrencies.
  • Non-custodial — payments settle to the site owner's own wallet.
  • Three render modes — full redirect to the hosted checkout, a modal overlay, or an inline widget on the membership confirmation page.
  • Signed IPN webhooks (HMAC-SHA-512) grant memberships server-side, with amount/currency verification and per-order locking against double delivery.
  • Free and trial levels complete instantly without touching the API.
  • Fiat or crypto pricing — price in your site currency and let Payzum convert, or denominate directly in a stablecoin.
  • Zero chargebacks — crypto payments are final.

Installation

Upload the payzum-pmpro folder to /wp-content/plugins/ (or install the zip via Plugins → Add New → Upload), then activate it (requires Paid Memberships Pro). The official payzum/payzum-php SDK is vendored, so no composer step is needed.

Configuration

Go to Memberships → Settings → Payment Gateway & SSL and choose Crypto / Stablecoins (Payzum):

Setting Meaning
API key From your Payzum merchant dashboard
Webhook secret Verifies incoming payment webhooks (IPN)
Currency mode fiat (default — Payzum converts from your site currency) or crypto (denominate directly in a stablecoin)
Render mode redirect (default), modal, or inline widget
Environment Production or staging (staging needs its own API key)
Debug log Writes to the WordPress debug log, prefixed [payzum]

The settings screen shows your site's IPN URL (https://<your-site>/?payzum_pmpro_ipn=1) — paste it into the Payzum dashboard webhook settings. The signature header is fixed; nothing to configure. Both credentials render as password inputs.

The member chooses the coin on the Payzum checkout, limited to the allowlist you configure in the Payzum dashboard (Merchants → Settings → Accepted tokens) and enforced server-side.

Order status mapping

Payzum payment status PMPro order Membership
finished (amount and currency match the initial payment) Success Granted
finished (settled amount or currency does not match) Review Not granted — held for review
partially_paid Pending (underpaid) Not granted
expired Error Not granted
failed Error Not granted
anything else Unchanged, note appended Unchanged

FAQ

Is Payzum custodial? No. Funds settle directly to your own wallet — Payzum never holds your money.

Can Paid Memberships Pro accept USDT or USDC? Yes — with this plugin, members pay for their level in USDC, USDT or other assets on the chains you allow, and the membership is granted automatically from a signed webhook.

Do members need an account or a specific wallet? No. They scan a QR or copy a deposit address from the Payzum checkout and pay from any wallet.

Can a partial payment unlock the membership? No. The level is granted only when the settled amount and currency match the order's initial payment; anything else is held for review or left pending.

What about recurring subscriptions? Crypto payments are one-time push payments, so this gateway covers the initial payment of a level. Renewals are handled the same way — the member pays again when due.

What about chargebacks? There are none — crypto payments are final, which eliminates chargeback fraud on memberships.

What data is shared with Payzum? Only the payment amount, currency, the order code and your site's callback URLs — no member personal data. Endpoints: https://merchant.payzum.com (production), https://staging.payzum.com (staging).

Payzum ships official plugins for most major e-commerce, donation and billing platforms — WooCommerce, Easy Digital Downloads, GiveWP, Magento 2, PrestaShop, Shopware 6, OpenCart, Zen Cart, nopCommerce, Ecwid, BigCommerce, Shopify, Wix, Medusa, Vendure, Saleor, Sylius, WHMCS, Blesta, HostBill, ClientExec, pretix, Frappe/ERPNext, Akaunting and django-payments — plus official SDKs for PHP, Node.js/TypeScript, Python and Rust. Browse them all at github.com/payzum-dev.

About Payzum

Payzum is a non-custodial crypto payment gateway for merchants: accept USDC, USDT and other digital assets with settlement straight to your own wallet, optional auto-conversion to stablecoins, and a single REST API. API docs: merchant.payzum.com/api/docs.

License

GPL-2.0-or-later. Contributed and maintained by Payzum.