# Bitcoin and Lightning **URL:** https://community.umbrel.com/c/bitcoin-and-lightning/9.md [Latest](https://community.umbrel.com/latest.md) · [Categories](https://community.umbrel.com/categories.md) --- ## [Dual Pool Mining Proxy (DPMP)](https://community.umbrel.com/t/dual-pool-mining-proxy-dpmp/24665)
**Author:** [@ChrisK](https://community.umbrel.com/u/ChrisK)\ **Replies:** 23\ **Last updated:** [September 20, 2026, 6:15pm UTC](https://community.umbrel.com/t/dual-pool-mining-proxy-dpmp/24665 "2026-09-20T18:15:01Z")
Just in case any solo miners out there might be interested, I just released a product called DPMP (Dual Pool Mining Proxy) via the Umbrel Community App Store. The app store link is: What is it For? Recently, the Nerd… --- ## [I've made something... a Zap app](https://community.umbrel.com/t/ive-made-something-a-zap-app/25448)
**Author:** [@UmbrelDreams](https://community.umbrel.com/u/UmbrelDreams)\ **Replies:** 0\ **Last updated:** [September 3, 2026, 4:23pm UTC](https://community.umbrel.com/t/ive-made-something-a-zap-app/25448 "2026-09-03T16:23:07Z")
Run your own zap receiver and NWC sender. Nostr-native, self-custodied, no third-party LNURL service in the loop. :high\_voltage: BrollyZapper now has its own Umbrel Community App Store for easy installing BrollyZapp… --- ## [Suggestions for Brand of Bitcoin Miners](https://community.umbrel.com/t/suggestions-for-brand-of-bitcoin-miners/25407)
**Author:** [@DirtyPaws](https://community.umbrel.com/u/DirtyPaws)\ **Replies:** 3\ **Last updated:** [August 21, 2026, 1:31pm UTC](https://community.umbrel.com/t/suggestions-for-brand-of-bitcoin-miners/25407 "2026-08-21T13:31:07Z")
I’m thinking of expanding and getting another miner. I’m currently mining with an Avalon S3 6T/H. I had a little NerdAXE that seemed of poor quality and worked for a year or so then quit. I’d really like to get an Ava… --- ## [Datum (Ocean) with Bitcoincore?](https://community.umbrel.com/t/datum-ocean-with-bitcoincore/25399)
**Author:** [@DirtyPaws](https://community.umbrel.com/u/DirtyPaws)\ **Replies:** 5\ **Last updated:** [August 18, 2026, 2:26pm UTC](https://community.umbrel.com/t/datum-ocean-with-bitcoincore/25399 "2026-08-18T14:26:42Z")
After BIP110 failed I attempted to return to an earlier version of Knots and ended up loosing access to my Umbrel. I reinstalled Umbrel OS and Bitcoincore, I understand Knots will no longer be supported. Since the Umbr… --- ## [Help transferring my funds to new wallet, node not Syncing](https://community.umbrel.com/t/help-transferring-my-funds-to-new-wallet-node-not-syncing/25366)
**Author:** [@Bobo2026](https://community.umbrel.com/u/Bobo2026)\ **Replies:** 7\ **Last updated:** [August 10, 2026, 5:16pm UTC](https://community.umbrel.com/t/help-transferring-my-funds-to-new-wallet-node-not-syncing/25366 "2026-08-10T17:16:41Z")
Hello, how do I get my bitcoin from umbrel to another wallet. My node running on Raspberry Pi have been off for over 6 months and I am out of space on my 1T HD. I rebooted it recently and my node is not syncing and I can… --- ## [Inability to run bitcoin core](https://community.umbrel.com/t/inability-to-run-bitcoin-core/25319)
**Author:** [@MikeH](https://community.umbrel.com/u/MikeH)\ **Replies:** 16\ **Last updated:** [July 31, 2026, 9:29pm UTC](https://community.umbrel.com/t/inability-to-run-bitcoin-core/25319 "2026-07-31T21:29:48Z")
I have a 100% sync on the blockchain but cannot open the node. I get an error saying that umbrel local refused to connect. Any assistance would be appreciated. --- ## [Bitcoin Node missing block data](https://community.umbrel.com/t/bitcoin-node-missing-block-data/25337)
**Author:** [@joelovestech](https://community.umbrel.com/u/joelovestech)\ **Replies:** 2\ **Last updated:** [July 31, 2026, 1:28pm UTC](https://community.umbrel.com/t/bitcoin-node-missing-block-data/25337 "2026-07-31T13:28:35Z")
i’m running version 1.3.0-patch.1 but noticed that the “Latest Blocks” cards flash momentarily when page loads but doesn’t populate. any way to get this working on my end again? thanks. --- ## [LND auto fee increase](https://community.umbrel.com/t/lnd-auto-fee-increase/24010)
**Author:** [@marek](https://community.umbrel.com/u/marek)\ **Replies:** 7\ **Last updated:** [July 24, 2026, 7:34pm UTC](https://community.umbrel.com/t/lnd-auto-fee-increase/24010 "2026-07-24T19:34:58Z")
When there is a channel closure and the fees are low LND increases the fee. Is there any chance to change when the fees should be increase? or how they should be increased? --- ## [Public Pool "Best Difficulty" resetting every day](https://community.umbrel.com/t/public-pool-best-difficulty-resetting-every-day/24984)
**Author:** [@Effi15](https://community.umbrel.com/u/Effi15)\ **Replies:** 3\ **Last updated:** [July 21, 2026, 5:12pm UTC](https://community.umbrel.com/t/public-pool-best-difficulty-resetting-every-day/24984 "2026-07-21T17:12:24Z")
Hey guys, Im having the issue that Public Pool is always losing every day the best difficulty. It starting always from 0, while my High Score is bigger. Is this normal? Like I tried Bassin for some days and couldnt see… --- ## [Unable to Unlock Wallet](https://community.umbrel.com/t/unable-to-unlock-wallet/25260)
**Author:** [@umbrelio](https://community.umbrel.com/u/umbrelio)\ **Replies:** 10\ **Last updated:** [July 14, 2026, 12:02pm UTC](https://community.umbrel.com/t/unable-to-unlock-wallet/25260 "2026-07-14T12:02:53Z")
ligntning\_app\_1 → Does anyone know if this infinite loop in the log is normal? I am also unable pay iinvoice due to this error: Must unlock wallet. Apparently this problem was introduced after upgrade 2 weeks ago to ver… --- ## [Is anyone using bitcoin-knots with Electrs?](https://community.umbrel.com/t/is-anyone-using-bitcoin-knots-with-electrs/25197)
**Author:** [@ookerberry](https://community.umbrel.com/u/ookerberry)\ **Replies:** 2\ **Last updated:** [July 12, 2026, 12:07am UTC](https://community.umbrel.com/t/is-anyone-using-bitcoin-knots-with-electrs/25197 "2026-07-12T00:07:52Z")
Is anyone using bitcoin-knots with Electrs? I’m running these versions and I can’t seem to get things to work. Should I just switch to bitcoin-core? umbrelOS: 1.7.3 bitcoin-knots: umbrel-bitcoin-knots:1.2.12 (Bitcoin… --- ## [Taproot assets on terminal](https://community.umbrel.com/t/taproot-assets-on-terminal/25268)
**Author:** [@umbrelio](https://community.umbrel.com/u/umbrelio)\ **Replies:** 0\ **Last updated:** [July 9, 2026, 12:28pm UTC](https://community.umbrel.com/t/taproot-assets-on-terminal/25268 "2026-07-09T12:28:20Z")
That document explain how to expose 10029 port using lightning terminal. Have someone tried it before? --- ## [Stratum V2 setup](https://community.umbrel.com/t/stratum-v2-setup/21108)
**Author:** [@realmike](https://community.umbrel.com/u/realmike)\ **Replies:** 1\ **Last updated:** [June 20, 2026, 6:01pm UTC](https://community.umbrel.com/t/stratum-v2-setup/21108 "2026-06-20T18:01:59Z")
Has anyone tried setting up StratumV2 on Umbrel and using it with Bitcoincore or Knotts? Any suggestions. --- ## [Electrs+Knots: Connecting to Electrs server... and can't connect w/Sparrow Wallet](https://community.umbrel.com/t/electrs-knots-connecting-to-electrs-server-and-cant-connect-w-sparrow-wallet/25194)
**Author:** [@ookerberry](https://community.umbrel.com/u/ookerberry)\ **Replies:** 0\ **Last updated:** [June 12, 2026, 9:10pm UTC](https://community.umbrel.com/t/electrs-knots-connecting-to-electrs-server-and-cant-connect-w-sparrow-wallet/25194 "2026-06-12T21:10:34Z")
I’d like some help please. I’m running Umbrel + Bitcoin-knots + Electrs and Electrs is stuck at “Connecting to Electrs server…” and I cannot connect to it using Sparrow Wallet umbrelOS: 1.7.3 bitcoin-knots: umbrel-bitc… --- ## [Core Lightning (CLN) Connection Problems](https://community.umbrel.com/t/core-lightning-cln-connection-problems/25163)
**Author:** [@megalith-node](https://community.umbrel.com/u/megalith-node)\ **Replies:** 1\ **Last updated:** [June 6, 2026, 11:00pm UTC](https://community.umbrel.com/t/core-lightning-cln-connection-problems/25163 "2026-06-06T23:00:43Z")
In the last ~5 days Megalith LSP ( https://megalithic.me/ ) has seen an upsurge in issues reported by Core Lightning users, where Core Lightning nodes are unable to maintain a connection to our LSP. Our theory that thi… --- ## [Node only partialy syncs](https://community.umbrel.com/t/node-only-partialy-syncs/25149)
**Author:** [@scottfetsh](https://community.umbrel.com/u/scottfetsh)\ **Replies:** 2\ **Last updated:** [May 29, 2026, 11:37pm UTC](https://community.umbrel.com/t/node-only-partialy-syncs/25149 "2026-05-29T23:37:04Z")
main page indicates 100% sync with 30+connections for 8 days, but in the insights area it shows still waiting for sync. lighting node and electrum are waiting for bitcoin node to sync. I’m not very understanding of the … --- ## [Bitcoin Core v30.2 segfaulting (exitCode=139)](https://community.umbrel.com/t/bitcoin-core-v30-2-segfaulting-exitcode-139/24964)
**Author:** [@ChrisK](https://community.umbrel.com/u/ChrisK)\ **Replies:** 0\ **Last updated:** [April 10, 2026, 5:13pm UTC](https://community.umbrel.com/t/bitcoin-core-v30-2-segfaulting-exitcode-139/24964 "2026-04-10T17:13:53Z")
Running Bitcoin Core v30.2 via the Umbrel Bitcoin Node app. After upgrading to v30.2, the bitcoind process crashes periodically with exitCode=139 (SIGSEGV — segmentation fault) approximately every 1-2 days. The crash als… --- ## [I have no peers 🥹](https://community.umbrel.com/t/i-have-no-peers/18852)
**Author:** [@Avranches](https://community.umbrel.com/u/Avranches)\ **Replies:** 29\ **Last updated:** [April 10, 2026, 12:08pm UTC](https://community.umbrel.com/t/i-have-no-peers/18852 "2026-04-10T12:08:02Z")
Hi everyone, I recently made my first bitcoin node and now I’m synchronizing the blockchain, and I noticed that as time went on it continued more and more slowly and that I went from having 10/11 peers to having 0 by pas… --- ## [Public Pool high rejection ratio](https://community.umbrel.com/t/public-pool-high-rejection-ratio/24879)
**Author:** [@Acedia](https://community.umbrel.com/u/Acedia)\ **Replies:** 3\ **Last updated:** [March 18, 2026, 7:09pm UTC](https://community.umbrel.com/t/public-pool-high-rejection-ratio/24879 "2026-03-18T19:09:34Z")
Recently I started using Braiins OS on my miner and I get a pretty high % of rejected shares when I mine to Public Pool on my Umbrel node. Thing is when I switch to CK Pool I get almost no rejected shares. Any idea what… --- ## [Lightning node running tools](https://community.umbrel.com/t/lightning-node-running-tools/24896)
**Author:** [@marek](https://community.umbrel.com/u/marek)\ **Replies:** 0\ **Last updated:** [March 15, 2026, 9:31pm UTC](https://community.umbrel.com/t/lightning-node-running-tools/24896 "2026-03-15T21:31:44Z")
I was missing some information when started running my umbrel. I made some tools for fee / peer analysis, how far can your node reach and simulate additional channels estimate payment success rate. More will follow. If y… --- ## [App not starting - Issues with i2pd\_daemon\_1](https://community.umbrel.com/t/app-not-starting-issues-with-i2pd-daemon-1/24836)
**Author:** [@digitalbase](https://community.umbrel.com/u/digitalbase)\ **Replies:** 0\ **Last updated:** [March 2, 2026, 9:31am UTC](https://community.umbrel.com/t/app-not-starting-issues-with-i2pd-daemon-1/24836 "2026-03-02T09:31:21Z")
After a few power failures a week ago i can’t get my btc node back up. The apps are all running but umbrel is reporting it as not running. I think the main issue is in the logs of the ip2pd\_daemon (see log below)… --- ## [Blackchain Sync Monitor v3.01](https://community.umbrel.com/t/blackchain-sync-monitor-v3-01/24828)
**Author:** [@RodB](https://community.umbrel.com/u/RodB)\ **Replies:** 0\ **Last updated:** [March 1, 2026, 1:43am UTC](https://community.umbrel.com/t/blackchain-sync-monitor-v3-01/24828 "2026-03-01T01:43:03Z")
Just posted a new App … https://github.com/rodb2008/RodB-Umbrel-Community-App-Store.git Defaults to BTC Coin (Bitcoin Core Node) but has configuration files for BC2, BCH, DGB and BSV (From Retro Mike MiningCore Nodes… --- ## [Positive inbound fees](https://community.umbrel.com/t/positive-inbound-fees/22336)
**Author:** [@Orville](https://community.umbrel.com/u/Orville)\ **Replies:** 10\ **Last updated:** [February 22, 2026, 9:29pm UTC](https://community.umbrel.com/t/positive-inbound-fees/22336 "2026-02-22T21:29:30Z")
Hello Umbrel developers - can we please have the option of setting accept-positive-inbound-fees=true in the GUI for the next version of the LND app? --- ## [LND channel in limbo even though it's way past its maturation block height](https://community.umbrel.com/t/lnd-channel-in-limbo-even-though-its-way-past-its-maturation-block-height/24780)
**Author:** [@basnappl](https://community.umbrel.com/u/basnappl)\ **Replies:** 0\ **Last updated:** [February 19, 2026, 12:05am UTC](https://community.umbrel.com/t/lnd-channel-in-limbo-even-though-its-way-past-its-maturation-block-height/24780 "2026-02-19T00:05:02Z")
Hi all, What could explain this?: What I have is a “Closing” channel with the following output from sudo docker exec -it lightning\_lnd\_1 lncli pendingchannels: { "total\_limbo\_balance": "2xxxxxx", "pendin… --- ## [Guide: Private Bitcoin Testnet Node on Oracle Cloud](https://community.umbrel.com/t/guide-private-bitcoin-testnet-node-on-oracle-cloud/24759)
**Author:** [@blankworker1](https://community.umbrel.com/u/blankworker1)\ **Replies:** 0\ **Last updated:** [February 16, 2026, 4:45pm UTC](https://community.umbrel.com/t/guide-private-bitcoin-testnet-node-on-oracle-cloud/24759 "2026-02-16T16:45:10Z")
This guide provides a complete, step-by-step blueprint for running a private Bitcoin Testnet4 node with an indexer using Umbrel OS on the Oracle Cloud Free Tier. This setup is perfect for developers, enthusiasts, or any… --- ## [Public Pool app - testnet4](https://community.umbrel.com/t/public-pool-app-testnet4/24748)
**Author:** [@blankworker1](https://community.umbrel.com/u/blankworker1)\ **Replies:** 3\ **Last updated:** [February 16, 2026, 4:18pm UTC](https://community.umbrel.com/t/public-pool-app-testnet4/24748 "2026-02-16T16:18:09Z")
A quick question - is it possible to configure the Public Pool app to mine on testnet blockchain? I want to run a testnet4 solo mining trial using a Bitaxe on Umbrel node. I saw this 2024 post Public Pool testnet - #… --- ## [Move LND node to different hardware](https://community.umbrel.com/t/move-lnd-node-to-different-hardware/24687)
**Author:** [@Volt](https://community.umbrel.com/u/Volt)\ **Replies:** 0\ **Last updated:** [February 2, 2026, 6:04pm UTC](https://community.umbrel.com/t/move-lnd-node-to-different-hardware/24687 "2026-02-02T18:04:15Z")
Hey all, I would like to move my current LND node to a new hardware. I already have Umbrel setup in the new hardware, Bitcoin Node connected and synced as well as Fulcrum. I have also installed LND but haven’t started i… --- ## [Bitcoin Knots UASF](https://community.umbrel.com/t/bitcoin-knots-uasf/24424)
**Author:** [@skidmore298](https://community.umbrel.com/u/skidmore298)\ **Replies:** 8\ **Last updated:** [February 2, 2026, 5:42pm UTC](https://community.umbrel.com/t/bitcoin-knots-uasf/24424 "2026-02-02T17:42:45Z")
Hi all, is the Bitcoin Knots USAF going to be added to Umbrel as I would like to signal my support. --- ## [Solo Mining with DATUM](https://community.umbrel.com/t/solo-mining-with-datum/21168)
**Author:** [@goldbug](https://community.umbrel.com/u/goldbug)\ **Replies:** 25\ **Last updated:** [January 26, 2026, 1:30am UTC](https://community.umbrel.com/t/solo-mining-with-datum/21168 "2026-01-26T01:30:43Z")
Hi I’m just waiting for an Bitaxe Gamma to arrive and I want to set it up as a solo miner. I don’t want to join a pool - I know the chance of finding a block is very, very small but I want to add to the decentralisation… --- ## [Anyone solo mining BitcoinSV?](https://community.umbrel.com/t/anyone-solo-mining-bitcoinsv/24558)
**Author:** [@johnnix](https://community.umbrel.com/u/johnnix)\ **Replies:** 2\ **Last updated:** [January 18, 2026, 3:13am UTC](https://community.umbrel.com/t/anyone-solo-mining-bitcoinsv/24558 "2026-01-18T03:13:58Z")
Hello, I would like to solo mine BitcoinSV and since this is a hardfork project from BTC I was wondering if I could use DATUM? Regards [Next page](https://community.umbrel.com/c/bitcoin-and-lightning/9.md?page=1)