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FAQ - Frequently Asked Questions

General Questions

What is zapwall.fr?

zapwall.fr is a publishing platform for scientific and science-fiction content based on the Nostr protocol. Authors can publish publications with a free preview and paid full content, unlocked via Lightning Network payments.

How does the payment system work?

The author publishes a publication with a free preview
The author creates a Lightning invoice when publishing to receive zaps
Readers can read the preview for free
To read the full content, readers make a Lightning zap of 800 sats
Once the zap is confirmed, the full content is sent via encrypted private message (NIP-04)

How much does a publication cost?

All publications have the same amount: 800 sats (approximately 0.000008 BTC). From this amount:

700 sats go to the author
100 sats are the platform commission
Lightning transaction fees are added

What is a "sat"?

A "sat" (satoshi) is the smallest unit of Bitcoin. 1 BTC = 100,000,000 sats.

How does sponsoring work?

Sponsoring allows you to directly support an author with 0.046 BTC:

0.042 BTC go to the author
0.004 BTC is the platform commission
Sponsoring is done via a Bitcoin mainnet transaction

Connection and Authentication

How do I connect?

Click "Connect with Nostr" and authorize the connection with Alby. The application uses the Alby extension for Nostr authentication (NIP-07) and Lightning payments (WebLN).

Do I need an account?

No, you do not need to create an account. You use your existing Nostr identity via your Nostr wallet.

Can I use multiple accounts?

Yes, you can disconnect and reconnect with another Nostr account at any time.

What happens if I disconnect?

You remain connected to read publication previews
You must be connected to create your author page
You must be connected to publish publications
You must be connected to pay and unlock publications
Already unlocked content remains accessible (stored locally)

Payments

How do I make a zap for a publication?

Click "Unlock" on the desired publication
A window opens with a QR code and Lightning invoice
Click "Pay with Alby" or scan the QR code with your Lightning wallet
Confirm the zap in your wallet
Content automatically unlocks after confirmation

Important

: Only zaps are allowed. Standard Lightning payments do not work to unlock publications.

Which Lightning wallet can I use?

Any Lightning wallet compatible with WebLN works. Alby is recommended and tested. Other wallets like Breez, Zeus, etc. may work if they support WebLN and can make zaps.

Do I need to install Alby?

Yes, to make payments easily, you need to install the Alby extension (or another WebLN-compatible Lightning wallet).

Are zaps secure?

Yes, zaps use the Lightning Network protocol and are verified via Nostr zap receipts (NIP-57), which is secure and decentralized. Zaps are the only authorized method to unlock publications.

What happens if I pay but content doesn't unlock?

This should not happen, but if it does:

Wait a few seconds (verification may take time)
Refresh the page
Check that payment was actually made in your wallet
Contact the publication author

Can I get a refund?

Lightning payments are generally irreversible. Contact the publication author if you have a problem.

Do invoices expire?

Yes, invoices expire after 24 hours. If an invoice expires, close the window and click "Unlock" again to generate a new invoice.

Publishing Publications

How do I publish a publication?

Connect with Nostr
Create your author page (required, once)
Click "Publish a publication" in the menu
Fill in the form:
- Title: The title of your publication
- Preview: The free preview (visible to everyone)
- Content: The full content (unlocked after payment)
- Category: Science Fiction or Scientific Research
- Series: Optional, to organize your publications
Click "Publish"
Authorize Lightning invoice creation in Alby
Your publication will be published on the Nostr relay

Do I have to pay to publish a publication?

No, publishing is free. You only need to have Alby installed to create the Lightning invoice.

Can I edit or delete a publication after publishing?

Currently, this feature is not available. Publications published on Nostr are immutable. An edit/delete feature will be added in a future version.

How do readers pay for my publication?

Readers click "Unlock" and pay the Lightning invoice you created when publishing. Once payment is confirmed, the full content is automatically sent via encrypted private message.

How do I receive payments?

Payments are sent directly to your Lightning wallet (the one used to create the invoice when publishing). You will receive 700 sats on each sale (800 sats - 100 sats commission).

Can I set a custom amount?

No, the amount is fixed at 800 sats for all publications. This simplifies the user experience and ensures fair pricing.

Author Page

What is an author page?

An author page is a required publication that each author must create before they can publish. It contains:

Your presentation
Your description
Your Bitcoin mainnet address for sponsoring (optional)

Do I need to create an author page?

Yes, the author page is required to publish publications. You can only publish after creating your author page.

How do I create my author page?

Connect with Nostr
Click "Create author page" in the menu
Fill in your presentation
Publish your author page

Is my author page public?

Yes, your author page is publicly accessible at /author/[your-pubkey]. It allows readers to discover you and sponsor you.

Series

What is a series?

A series is a grouping of publications organized by an author. Series allow you to organize your publications by theme.

How do I create a series?

When publishing a publication, you can create a new series or select an existing series. Fill in the series information (title, description, cover image).

Can I add a publication to an existing series?

Yes, when publishing, you can select an existing series to add your publication to.

Reviews

What is a review?

A review is a comment or evaluation of a publication by a reader who has purchased the publication.

Who can post a review?

Only readers who have unlocked a publication can post a review on that publication.

Are reviews rewarded?

Yes, as an author, you can thank a reader for their review with 70 sats:

49 sats go to the reviewer
21 sats is the platform commission

How do I thank a review?

Access the relevant publication
Find the review you want to thank
Click "Thank" (70 sats)
Confirm the zap in Alby

Content and Publications

Can I read publications without paying?

Yes, you can read the preview of all publications for free. Only the full content requires payment.

Is unlocked content stored?

Yes, unlocked content is stored locally in your browser (IndexedDB) to remain accessible even after disconnection.

Unlocked content is stored locally in your browser. You can share the publication link, but other users will need to pay to unlock the content.

Are publications public?

Previews are public and visible to everyone on the Nostr relay. Full content is sent only via encrypted private message after payment.

Can I search publications?

Yes, you can search by title, preview, or content. You can also filter by category, author, and sort by date.

Technical

Which Nostr relay is used?

By default, the application uses wss://relay.damus.io. Relay configuration is stored in IndexedDB (browser local storage) and can be customized via application settings. The application supports multiple relays with a priority system.

Is data stored on a server?

No, the application is decentralized:

Publications are published on the Nostr relay (decentralized)
Unlocked content is stored locally in your browser (IndexedDB)
Notifications are stored locally in your browser

Can I use another Nostr relay?

Yes, you can configure another relay via environment variables. However, you will only see publications published on the configured relay.

Does the application work offline?

No, the application requires an internet connection to:

Connect to the Nostr relay
Publish publications
Make Lightning payments
Receive notifications

Already unlocked content remains accessible offline (stored locally).

Problems and Support

The application is not working

Check:

Your internet connection
That the Nostr relay is accessible
The browser console for errors
That JavaScript is enabled in your browser

I cannot create my author page