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② 後台搜尋「MFPro Anonymous Digital Sales」→ 直接安裝（推薦）
原文外掛簡介
MFPro Anonymous Digital Sales lets you sell files (or access to links) from your WordPress site without asking buyers for a name, an e-mail address or an account. The buyer picks a cryptocurrency, pays, and keeps an order number plus a secret receipt token. That pair is the only thing that identifies an order.
What you get
Offers with several files or links each, a price in USD and a description (Markdown supported).
A “Buy” shortcode and an “Order status” shortcode for your pages, and a small script tag to open the buy dialog from any other site.
Payment in the cryptocurrencies your NOWPayments account accepts. The plugin checks which coins are enabled and their minimum amounts.
After payment the buyer downloads a PDF “access sheet” with the links and passwords of the files. No account, no e-mail.
Promo codes, manual order status changes and a list of orders for the site owner.
No customer data is collected by this plugin: no name, no e-mail, no address.
Links
Author: https://michalfutera.pro
Second creator: https://scalewithisaiah.com
FAQ and guides: https://faq.michalfutera.pro
MFPro Blog MCP, a separate service by the same author that connects WordPress to AI assistants (optional, this plugin works without it): https://blogmcp.michalfutera.pro
Source code, issues and contributions: https://github.com/mjfutera/mfpro-anonymous-digital-sales
You need your own NOWPayments account. The plugin does not process payments itself and has no fee of its own. How to create the account and get the keys: https://faq.michalfutera.pro/nowpayments-create-account-and-get-keys . Note: that guide contains the author’s affiliate (referral) link to NOWPayments; the author may receive a commission, you pay nothing extra.
Privacy by design: the receipt token is stored encrypted, the plugin logs nothing unless you switch the debug log on, and nothing is sent to the plugin author.
External services
This plugin connects to one external service, NOWPayments (https://nowpayments.io), to create and check cryptocurrency payments. Nothing is sent until you enter your API key in Settings.
What for: creating an invoice or payment for an order, listing the cryptocurrencies your account accepts, reading minimum amounts, and checking the status of a payment (also from a WP-Cron job every 5 minutes while an order is waiting for payment).
What is sent: your NOWPayments API key (as a request header), the order number, the price in USD, a short order description, the return address of your site and, if enabled, the address of your webhook. The buyer chooses the cryptocurrency and pays on the NOWPayments page; the plugin never sees wallet keys.
When: when a buyer creates an order, when the buy dialog loads the list of coins and minimum amounts, when an order status is checked, and from the background job while orders are pending.
Incoming data: NOWPayments calls a webhook address of your site with the payment status. The call is verified with an HMAC signature using your IPN secret.
Service: https://nowpayments.io. Terms of service: https://nowpayments.io/doc/fd-tos.pdf. Privacy policy: https://nowpayments.io/doc/fd-privacy-policy.pdf.
Privacy
Buyers: the plugin stores the order number, an encrypted receipt token, the offer, a snapshot of the purchased files, the price and the payment id. It does not store names or e-mail addresses. For rate limiting, a short-lived counter keyed by a hash of the IP address is kept in WordPress transients. The buyer’s browser keeps the order number and receipt token in its local storage so the order can be found again; the buyer can clear it at any time.
Debug log (off by default): when switched on, it can contain order numbers, payment ids, IP addresses of throttled requests and short excerpts of the payment provider’s answers. Secrets are masked.
Site owner: the API key, the IPN secret and the resource passwords are stored encrypted in the database. Define ANONYMOUS_SALES_ENCRYPTION_KEY in wp-config.php to keep the encryption key outside the database.
Source code
The full, human-readable source of this plugin is public: https://github.com/mjfutera/mfpro-anonymous-digital-sales. It is the same code as in the package. The release package is built from it with node bin/build.mjs.
Third party libraries
FPDF 1.86 by Olivier Plathey (http://www.fpdf.org), used to build the PDF access sheet. FPDF is released under a permissive license with no usage restrictions.
