blockspace.wiki
Blockspace expansion policy
Research: the relay and consensus levers that change how much blockspace is usable and who can reach it, each measured effect beside the arguments for and against. Descriptive; it takes no side.
Status on blockspacelabs.com: Research.
What it studies #
The Labs site describes "the levers that change how much blockspace is usable and who can reach it". It names two kinds:
- relay policy: the fee floor, the standard transaction size, data-carrier limits (OP_RETURN) and full-RBF;
- consensus: the block weight limit and the witness discount.
For each lever the study sets "the measured effect beside the arguments for and against". It is written as research, not advocacy, and states no position. The card ends: "Descriptive research; it takes no side."
The figures on the card #
The card shows each lever's current setting on the Labs node, in the reading of 2026-10-20 09:07:08 UTC:
| lever | setting |
|---|---|
| fee floor here | 0.00000000 BTC/kvB |
| max standard tx | 400,000 WU |
| OP_RETURN limit | 83 bytes |
| full-RBF here | on |
| max block weight | 4,000,000 WU |
| weight per byte | witness 1 WU, base 4 WU |
The card notes that the size and OP_RETURN figures are Bitcoin Core 28 defaults and that the weight limits are consensus. The wiki's own reading of the node, as of block 972,308, 2026-10-20 11:17:25 UTC: fee floor 0 sat/vB, full-RBF on.
The data it will use #
The node's settings, and for the measured effects two other studies: the policy observatory and the byte census. Like every Research card it is descriptive: it says what it studies and from which data, and claims no results. The relay policy page describes each relay lever on the node.
Related #
Sources #
Live figures: relay as of block 972,308, 2026-10-20 11:17:25 UTC. Refreshed hourly.
Updated 2026-10-20 · This page as Markdown