I'm currently installing my very first Electrum server, and figured I'd start a topic to keep track of my progress.

Medusah's post 4 weeks ago pointed out that an increase number of Bitcoin miners lowered their minimum transaction fee from 1 to 0.1 sat/vbyte. Unfortunately, Electrum doesn't allow the user to set a fee lower than the connected Electrum server's minimum, which makes it much more compliated to use the lower fees.
My goal is to create the first Electrum server that allows this. I may or may not be running this long-term, by the time others join the lower fees I may stop it as it takes quite some disk space.
Note that some miners still prefer empty blocks over lower fees. Use mempool.space to see how likely your transaction is going to be included. If it takes too long to confirm: just switch to an Electrum server that doesn't accept low-fee transactions, and create a new transaction with higher fee.

My current VPS has 32 GB RAM, and enough NVMe storage for everything except for Bitcoin Core's blocks directory. That directory is on much slower network storage. I'll have to see how it performs on this hardware.
It turns out there are many different implementation of Electrum server. ABCbits's post made me choose Fulcrum.

Progress so far (summarized):

• Create user "electrum"
• Start and sync Bitcoin Core:

• Start Fulcrum:

• Current status:

• Syncing got slower and slower, so I followed Cricktor's post and added caching:

• After building it's database, edit Fulcrum's quickconfig.conf with hostname and IP-address for Electrum to connect to.
  Use instructions from https://github.com/christroutner/docker-fulcrum to create a SSL certificate
• ~/Fulcrum-1.12.0-x86_64-linux/Fulcrum quickconfig.conf
  Server is running: electrum.loyce.club:50002
  Minimum relay fee reduced to 0.1 sat/vbyte by restarting Bitcoin Core with adjusted options (see above).

Now we wait To be continued Electrum settings
"Teach" your Electrum to sign transactions with less that 1 sat/vbyte:

Quote from: ghost43 on August 14, 2025, 10:23:20 PM

Code:

wallet.relayfee = (lambda: 0)

Or automate it on startup:

Quote from: TryNinja on August 17, 2025, 04:12:31 PM

I just wrote the smallest Electrum plugin ever that just runs this command at start.
https://files.ninjastic.space/relayfeezero-0.0.1.zip
Tools -> Plugins -> Add -> Select the zip and install.

Note: this allows to create transactions that pay less than 0.1 sat/vbyte fee, but at the moment no mining pool will accept those.

Self-moderated against spam. Discussion is of course allowed.

I'm currently installing my very first Electrum server, and figured I'd start a topic to keep track of my progress.

Medusah's post 4 weeks ago pointed out that an increase number of Bitcoin miners lowered their minimum transaction fee from 1 to 0.1 sat/vbyte. Unfortunately, Electrum doesn't allow the user to set a fee lower than the connected Electrum server's minimum, which makes it much more compliated to use the lower fees.
My goal is to create the first Electrum server that allows this. I may or may not be running this long-term, by the time others join the lower fees I may stop it as it takes quite some disk space.
Note that some miners still prefer empty blocks over lower fees. Use mempool.space to see how likely your transaction is going to be included. If it takes too long to confirm: just switch to an Electrum server that doesn't accept low-fee transactions, and create a new transaction with higher fee.

My current VPS has 32 GB RAM, and enough NVMe storage for everything except for Bitcoin Core's blocks directory. That directory is on much slower network storage. I'll have to see how it performs on this hardware.
It turns out there are many different implementation of Electrum server. ABCbits's post made me choose Fulcrum.

Progress so far (summarized):

• Create user "electrum"
• Start and sync Bitcoin Core:

• Start Fulcrum:

• Current status:

Now we wait To be continued

Self-moderated against spam. Discussion is of course allowed.