Blog
Guides for selling and protecting software
Selling online · 13 min read
The best Gumroad alternatives in 2026: six platforms compared on fees, payouts and features
An honest comparison of six Gumroad alternatives: PapelShip, Lemon Squeezy, Payhip, Podia, SendOwl and Whop, on fees, payouts, crypto, licensing and stores.
October 16, 2026
Selling online · 10 min read
Fraud prevention for digital goods: stop card testing, chargebacks and abuse before delivery
Fraud prevention for digital goods, step by step: read invoice risk signals, stop card testing with product rules, win chargebacks and handle crypto's finality.
October 16, 2026
Software licensing · 8 min read
A customer portal for software licenses: cut support tickets with self-service
Let buyers check license status, dates, remaining time and HWID info themselves, and request HWID resets without a ticket. How a customer portal cuts support load.
October 15, 2026
Crypto payments · 10 min read
How to accept Bitcoin payments: a practical guide for online businesses
How to accept Bitcoin payments: wallet address vs BTCPay Server vs a hosted gateway, confirmations, network fees, volatility, refunds and accounting.
October 15, 2026
Selling online · 12 min read
The best Sellix alternatives in 2026: five platforms for digital goods with crypto checkout
Five Sellix alternatives for selling digital goods, game keys and software licenses with crypto checkout: PapelShip, Sell.app, SellAuth, Shoppy and Whop.
October 14, 2026
Software protection · 9 min read
How to detect leaked builds of your software and respond when one appears
How to detect leaked builds of your software, trace a shared copy back to a license with Binary Trace, and contain the leak with a clear response plan.
October 14, 2026
Selling online · 9 min read
Discord roles for digital products: give buyers access the moment they pay
Assign Discord roles for digital products automatically. Map roles to product variants, lock private channels and run paid memberships and communities safely.
October 13, 2026
Selling online · 9 min read
How to accept bank transfer and gift card payments in your online store
Accept bank transfer and gift card payments in your online store: when to offer them, how to set them up, how to match payments to orders and limit fraud.
October 12, 2026
Software licensing · 11 min read
Software licensing models explained: perpetual, subscription, node-locked, floating and more
Compare commercial software licensing models, from perpetual and subscription to node-locked, floating, seat and usage-based, and how to enforce each one.
October 12, 2026
Crypto payments · 12 min read
Custodial vs non-custodial crypto payment gateways: who holds your money
Custodial gateways hold your crypto; non-custodial ones pay your own wallet. Compare freezes, withdrawals, KYC, refunds, fees and how common gateways work.
October 11, 2026
Software protection · 9 min read
How to update your software protection remotely, without rebuilding
Change anti-tamper rules, blacklists, session limits and secrets from the dashboard, applied on the client's next check. How Remote Settings and Auto Rules work.
October 11, 2026
Software licensing · 10 min read
Subscription licensing for software: perpetual, subscription and time-limited licenses compared
Compare perpetual, subscription and time-limited software licenses, choose billing cycles and trials, and enforce expiry on the server with fair renewals.
October 10, 2026
Selling online · 11 min read
Merchant of record vs payment processor: who is the seller, who owes the tax
What a merchant of record is, how it differs from a payment processor, and who handles VAT, chargebacks, fees and customer data in each, with a decision table.
October 9, 2026
Selling online · 9 min read
Sell in every language: a practical guide to store localization
A practical store localization guide: plan languages and fallbacks, translate with AI and review it, route visitors automatically and get currency right.
October 9, 2026
Selling online · 10 min read
How to sell digital products online: the complete guide to keys, files, subscriptions and memberships
How to sell digital products online: what to sell, choosing a store and theme, card and crypto payments, automatic delivery, pricing, support and fraud basics.
October 8, 2026
Software licensing · 11 min read
Free trial licenses for desktop software: trials that convert without being abused
How to add a free trial to desktop software: trial types, why local timers get reset, server-side trial keys bound to HWID, and turning trials into sales.
October 7, 2026
Software protection · 8 min read
In-memory loading: how to protect DLLs without writing them to disk
Files on disk are easy to copy and inspect. How in-memory loading maps encrypted modules into a process without touching disk, its real limits, and how to pair it.
October 7, 2026
Software licensing · 10 min read
License key formats: how to design secure, readable keys with keymask profiles
How to choose a license key format: entropy, readable groups, unambiguous characters and fixed prefixes, plus reusable keymask profiles in qPapel Auth.
October 6, 2026
Selling online · 10 min read
Build your store with PapelAI: an AI store builder that keeps you in control
Use an AI store builder without losing control: edit on the live page, let the PapelAI Copilot propose changes you approve, and keep code and history close.
October 5, 2026
Crypto payments · 10 min read
What is a crypto POS system? How crypto checkout works, from invoice to confirmed order
A crypto POS system turns a blockchain transfer into an order you can track. Learn how it works, who holds the funds and which features matter when you choose.
October 4, 2026
Crypto payments · 9 min read
Crypto payment processing explained: every stage from checkout to settlement
Follow one crypto payment from checkout to settlement: quotes, detection, confirmations, edge cases, custody and fees, and what a good processor automates.
October 3, 2026
Crypto payments · 9 min read
How to accept USDT payments: TRC20, ERC20 and BEP20 explained for merchants
Learn how to accept USDT payments safely: how TRC20, ERC20 and BEP20 differ, how to prevent wrong-network payments, and how to automate delivery.
October 2, 2026
Selling online · 9 min read
How to add a checkout widget to your website: embedded checkout for card, crypto and bank transfer
Add a checkout widget to your website with one script tag. How embedded checkout works, how to set it up, which payment methods it takes and what happens next.
October 1, 2026
Crypto payments · 9 min read
How to accept card and crypto payments in one checkout
Accept card and crypto payments in one checkout: which methods to offer, how they differ, how to design the payment step and keep every order in one place.
September 30, 2026
Selling online · 9 min read
How to sell software licenses online: store, checkout, automatic key delivery and HWID activation
Sell software licenses online end to end: choose a license model, set up a store and checkout, deliver keys automatically and activate them with HWID locking.
September 29, 2026
Software licensing · 8 min read
What is HWID locking? Hardware-bound licenses for C++ and C# software
HWID locking ties a license key to one machine. How hardware fingerprints work, why the check must happen on the server, and how to handle resets fairly.
September 28, 2026
Selling online · 9 min read
How to run a software reseller program: subscription and pay-per-key models, debt limits and reseller panels
Run a software reseller program that scales: choose subscription or pay-per-key resellers, cap risk with debt limits and quotas, and keep every key traceable.
September 27, 2026
Software licensing · 9 min read
How to migrate from KeyAuth to PapelShip: a practical playbook for C++ and C#
A step-by-step plan to migrate from KeyAuth to PapelShip: inventory, map features, move keys and users, swap the SDK, test and cut over without locking anyone out.
September 26, 2026
Software licensing · 10 min read
C++ authentication for licensed software: how a secure licensing flow works
How secure C++ authentication works: key exchange, encrypted and signed traffic, server-side license and HWID checks, integrity checks and server-side data.
September 25, 2026
Software licensing · 10 min read
C# software licensing without hard-coded secrets: keep keys out of your .NET assemblies
Hard-coded secrets in .NET assemblies are easy to extract. Learn how C# software licensing with server-side strings and files keeps them out of your build.
September 24, 2026
Software protection · 9 min read
Client-side protection vs server-side secrets: where software security really lives
What client-side protection can and can't do, why server-side strings, files and variables change the economics of cracking, and how to split the two.
September 23, 2026
Software protection · 9 min read
How qPAnalyzer detects renamed and custom reverse-engineering tools
How qPAnalyzer's AI-assisted reverse-engineering tool detection flags renamed and custom tools, keeps false positives low and gives you evidence to act on.
September 22, 2026
Software protection · 9 min read
Anti-reverse-engineering software: why static blacklists aren't enough
Why process and window blacklists only catch known tools, and what behavioural checks and AI-assisted detection add to anti-reverse-engineering software.
September 21, 2026
Software licensing · 9 min read
Secure license key management for digital products: generate, deliver, pause and ban keys
A practical guide to secure license key management: generate keys on demand, deliver them on payment, pause, ban and inspect them, and handle leaked keys.
September 20, 2026
Software protection · 9 min read
A software protection stack for C++ and C# products, layer by layer
Build a software protection stack for C++ and C# products: licensing and HWID, integrity checks, anti-debug, blacklists, server-side data and qPAnalyzer.
September 19, 2026
Software licensing · 9 min read
The best KeyAuth alternatives in 2026: five licensing platforms compared
A fair roundup of five KeyAuth alternatives for C++ and C# licensing: PapelShip, LicenseSeat, PWF Auth, Keygen and Cryptolens, with who each one suits.
September 18, 2026
Crypto payments · 9 min read
Crypto POS API integration: checkout, in-store terminals and payouts
A developer's guide to crypto POS API integration: create invoices server-side, handle webhooks idempotently, take crypto in store and reconcile payouts.
September 17, 2026