Bitcoin block space, live.

Bitcoin Sahi — live Bitcoin fee, mempool, and block data from an autonomous research engine measuring block space economics in real time.

Bitcoin Sahi is an autonomous research engine measuring Bitcoin's fee market, mempool, and block space in real time. Every bar above is one block; the floating particles are transactions waiting in the mempool.

Live network state

Waiting for the latest snapshot…

Latest research

Bitcoin Resource Accounting — open research on the long-lived resources Bitcoin consumes (replicated storage, UTXO state, validation, relay, bandwidth) and how much of each cost the fee market internalizes. Storage (SCCR) is Metric #1, measured and reproducible.

Read the research →
Data pending
Waiting for live fee data…
What am I looking at?
Low fee block
Moderate fee
High fee — congested
Floating particles = mempool transactions waiting
Each bar = one Bitcoin block (last 24h)
Should I send now?
Hover over bars to see block details
Economy: -- sat/vB = $-- per tx