Post
Topic
Board Bitcoin Technical Support
Re: [Jul 2025]Mempool empty, Consolidate your small inputs @0.10 sat/vbyte (???)!
by
satscraper
on 23/07/2025, 09:49:22 UTC
Has the default minrelayfee in Bitcoin Core config been updated to 100 sats/KB or something?

To make it that value or lower for a newer version of Bitcoin Core is the only way that these sub-1sat transactions would be allowed to propagate, or else they would have been discarded by the nodes.

That, or Bitcoin Knots made that adjustment.

I believe miners are free to set the minrelayfee themselves, and their reasoning for choosing the particular low value is based on the assumption that it's better to mine the chock-full blocks rather than half-empty ones. That's why we're currently seeing blocks filled with those sub-1 sat/vB transactions. One of such block is 906805 which is filled with the sub-1 sat/vB transactions containing inscriptions.