Rizful primary sources — 2026-05-03

Project status in this pass

• No canonical standalone Rizful whitepaper or litepaper surfaced.
• The clearest current source of truth is the official site plus the first-party Megalith Lightning Docs covering onboarding, receive-only NWC permissions, and Rails checkout integration.
• The project is best understood as a hosted Lightning wallet and NWC payment control plane rather than as a simple Nostr zapping wallet.

Primary-source snapshots

1) Official homepage

• URL: https://rizful.com/
• Key excerpt:
  • The homepage emphasizes security and explicitly says Rizful does not ask for a user’s Nostr private key.
  • It says users log in with email/password and can enable optional two-factor authentication.
  • That makes Rizful look like a hosted wallet account system with a distinct security model, not merely a Nostr extension.

2) Onboarding guide

• URL: https://docs.megalithic.me/using-rizful/your-first-steps-with-rizful/
• Key excerpt:
  • The guide says Rizful is the easiest way to get started with Lightning payments and Nostr zaps.
  • It walks users through account creation, choosing a @rizful.com Lightning address, connecting Nostr clients, and requesting a test zap.
  • This is strong evidence that Rizful is packaging wallet onboarding and social-payment setup together.

3) Receive-only NWC guide

• URL: https://docs.megalithic.me/using-rizful/get-read-only-nwc-code-from-rizful/
• Key excerpt:
  • The guide says a read-only NWC code is safe to share with untrusted apps because it only allows receiving payments, not sending them.
  • It explicitly lists e-commerce platforms, zap receivers, gaming platforms, and any app that only needs to send payments to the wallet as intended uses.
  • That makes the NWC surface look like reusable payment plumbing rather than an internal wallet convenience feature.

4) Rails integration guide

• URL: https://docs.megalithic.me/rizful-tips-and-tricks/accept-bitcoin-payments-in-ruby-on-rails/
• Key excerpt:
  • The guide says Rizful is a hosted Lightning wallet that exposes a Nostr Wallet Connect API.
  • It says a Rails application can create Lightning invoices and react to payment events without running its own Lightning node.
  • It strongly recommends receive-only NWC codes for checkout, donation, and paywall integrations.
  • It also argues that NWC reduces vendor lock-in because developers can switch providers by changing the connection string.

Working conclusion

Rizful is best cataloged as hosted wallet and NWC integration infrastructure. The deciding evidence in this pass was the combination of branded Lightning addresses, Nostr-client onboarding, receive-only NWC permissioning for untrusted apps, and first-party server-integration guidance that positions Rizful as a wallet-service backend for Lightning-enabled applications.