BTCpayserver

[timconsidine]

@nostrdev I added btcpayserver to the list of custom apps that can be deployed using https://ccai.appx.uk.

It installed fine, but I am getting a blank screen when I first visit the domain and am routed to /register.

Cloudron logs for the installed app show :

ug 24 22:07:24 fail: Microsoft.AspNetCore.Server.Kestrel: Connection id "0HNF3A7ITPD1Q", Request id "0HNF3A7ITPD1Q:00000001": An unhandled exception was thrown by the application.
Aug 24 22:07:24 --- End of inner exception stack trace ---
Aug 24 22:07:24 --- End of stack trace from previous location ---
Aug 24 22:07:24 --- End of stack trace from previous location ---
Aug 24 22:07:24 --- End of stack trace from previous location ---
Aug 24 22:07:24 --- End of stack trace from previous location ---
Aug 24 22:07:24 ---> System.IO.IOException: The configured user limit (128) on the number of inotify instances has been reached, or the per-process limit on the number of open file descriptors has been reached.

Any thoughts ?

[robi]

What is Microsoft code doing there?

[nostrdev]

We suspect this is an issue with the host machine

You can test by running the following (will reset on next boot):

sudo sysctl fs.inotify.max_user_instances=512  # Or higher, e.g., 1024
sudo sysctl fs.inotify.max_user_watches=524288  # Increase this too if needed

For permanent fix:

• Edit or create /etc/sysctl.conf

insert / update:

fs.inotify.max_user_instances=512
fs.inotify.max_user_watches=524288

Then apply:

sudo sysctl -p

[nostrdev]

That web app looks cool! Is it self-hostable? Thanks for adding btcpay..

Remember that BTCPay also requires BTC Core (or Knots), or at least access to an instance somewhere

[timconsidine]

@nostrdev said in BTCpayserver:

That web app looks cool! Is it self-hostable?

Yes, if you're referring to CCAI
You can actually use the deployed version at https://ccai.appx.uk to install CCAI onto your own Cloudron server.
Or you do it manually (docker build, docker push, cloudrin install) by cloning the repo

[timconsidine]

@nostrdev said in BTCpayserver:

We suspect this is an issue with the host machine

Thank you.
Will investigate

[nostrdev]

@timconsidine I'm sure this is totally safe but would still prefer not to enter creds on a third party domain

Where is the repo?

found it: https://git.cloudron.io/timconsidine/cloudron-customapp-installer

I see that it requires docker to do the manual setup, is there a public image available?

This tool really ought to be on the main app store, it looks really handy!!

[timconsidine]

@nostrdev yes there is a public docker image
tcmbp132021/cloudron-customapp-installer:vX.Y.Z

I’m away at present so please check hub.docker.com for the correct version number.

Totally understand about credentials sensitivity.
You can check the code in the repo to see nothing is stored. And no metrics captured.
But feel free to manually use cloudron install —image tcmbp132021/cloudron-customapp-installer:vX.Y.Z after cloning the repo to have access to CloudronManifest.json

The hosted installer is purely a service, direct install is available.

I guess you could set up a special purpose Cloudron user and disable or change password after using it.

[timconsidine]

@nostrdev please upvote https://forum.cloudron.io/topic/14231/ccai-cloudron-custom-app-installer

[nostrdev]

done! we would like to add that the packaging team should prioritise the custom app installer over btcpay server (as we can easily deploy apps using the package installer from that point onward)

[LoudLemur]

What is the latest news on official support for BTCpayserver on Cloudron?

[timconsidine]

@nostrdev I'm trying to install btcpayserver after installing btc-core (and node fully synced)

I change the rpc auth in btcpayserver config.yml to match what is in btc-core bitcoin.conf

I restarted btcpayserver

I get a blank page on btcpay.domain.tl in Safari and a 500 error in Firefox.

btcpayserver logs :
Jan 07 16:57:24 fail: Microsoft.AspNetCore.Server.Kestrel: Connection id "0HNIE1J43J819", Request id "0HNIE1J43J819:00000001": An unhandled exception was thrown by the application.

I tried to set sysctl values but they're in RO location so will need a rebuild if wrong

Am I doing something wrong ?

Using https://git.nostrdev.com/stuff/cloudron-btcpay

[robi]

@timconsidine awesome, how much space does btc-core take up fully synced?

[nostrdev]

@timconsidine when you say the config matches, you mean this part right?

# Bitcoin RPC Configuration
bitcoin:
  rpc_user: "bitcoin"
  rpc_password: "xxxxx"

Note that the rpc_password should be the actual password, NOT the rpcauth= value in the bitcoin.conf file (which is derived from the password)

[nostrdev]

@robi for info, this is a non-pruned (full) node, as of today:

root@d1f00579-9662-4a14-896e-cf7cd8127709:/media/core# ls
banlist.json  bitcoind.pid  blocks  chainstate  debug.log  fee_estimates.dat  peers.dat  settings.json
root@d1f00579-9662-4a14-896e-cf7cd8127709:/media/core# du -sh
766G    .
root@d1f00579-9662-4a14-896e-cf7cd8127709:/media/core# 

[robi]

@nostrdev thanks, good to know.

You know the next question..

Pruned?

And is it sync-able already pruned?

I can't install it if it's not..

[timconsidine]

@robi I pruned mine to 3Gb
I think somewhere I read pruning down to 600Mb might be possible. Maybe not lower.

[timconsidine]

@nostrdev thank you

Yes, I used the password value printed below that line as a comment.

I will dig bit deeper later

[LoudLemur]

It seems that we are very nearly there with BTCpayserver. Lets wrap up this project and publish it officially on cloudron.

Here are the main improvements on BTCserver just over the past year (2025):

BTCPay Server Main Improvements (Jan 2025 - Jan 2026)

POS & Checkout

• Tax rates applied to items with breakdowns in checkout/receipts
• Improved total breakdown, receipts, and cart views
• POS reports now include tips/subtotals
• Numeric keypad shows input amount (not total); item list support
• Receipts displayable in iframes; hide back-to-store link in iframes
• Disable zero-amount invoices; improved mobile UX

Wallet & Transactions

• Wallet policy output descriptors (BIP388/389) and Taproot signing (BIP86) for hardware wallets
• RBF sweeping transactions and CPFP UX improvements
• Manual coin selection with advanced filters ("Clear All")
• Browse generated addresses; fiat amount previews in tx details
• Tx fee/fee rate info; exchange rate tracking; additional rates via store settings
• BBQr PSBT support (up to 16MB); improved PSBT error messages

API & Greenfield

• New webhooks: InvoiceExpiredPaidPartial, InvoicePaidAfterExpiration
• amountPaid on invoices; email settings endpoint
• Subscriptions API; store users API (update/retrieve by ID/email)
• Payment requests link to external invoices (e.g., QuickBooks) via Reference ID
• PoS data without auth; payout methods optional for pull payments
• Histograms with Lightning data; image upload for app items

Reporting & Invoices

• Renamed/reordered invoice report columns; export all metadata
• Payment request reports with improved filtering
• Refund reports; "Reporting" button for quick access
• Responsive UI; sales stats filter to paid invoices only
• Admin can view users' invoices; manual payout state transitions (InProgress → AwaitingPayment)

Subscriptions & Automation

• Recurring payments with reminders; prefilled subscriber email
• Ambassadors can monetize server access
• Installable backend language packs
• Advanced server email rules (conditions, placeholders, CC/BCC)

UI/UX & Accessibility

• Custom HTML meta tags/lang for SEO (crowdfund/PoS)
• Improved hardware wallet import (no confirm addresses page; auto-label by model)
• Dashboard tweaks (remove store headline, hide LN balance for non-admins)
• Tooltip/link for pull-payment tags; copy link button
• Auto-disable crashed plugins; cleanup expired data

Integrations & Providers

• Phoenixd, Coinmate (CZK), Kraken (CAD), Yadio, Norwegian exchanges (Bitmynt/Bare Bitcoin)
• Fallback rate sources; rate providers configurable
• Shopify integration deprecation warning + new plugin link
• Multisig flow improvements (BTCPay-only users); confirmation prompts

Bug Fixes & Reliability

• RBF label consistency; fee rate crashes; Yadio rate lookup
• Archived invoices private; status filter 500 errors
• Lightning payment detection post-connection string swap
• Vault signing for large PSBTs; pending payouts on unresponsive LN
• Notifications API crashes; Boltcard reset issues; escaped HTML in UTXOs
• Zero-amount payment requests; receipt options from store settings

Sources: GitHub releases (up to v2.3.3), Changelog.md. Full notes: Releases.

[nostrdev]

BTCPayServer has now been updated to v2.3.3 (from 2.1.6)

Tested on our instance and it's running fine

https://git.cloudron.io/playground/btcpayserver/