The mempool, ingested and attributed

Live unconfirmed transactions ingested by SENTINEL from public Bitcoin APIs — mempool.space primary, Blockstream.info on failover. Counts, sizes and fees are INFERRED and attributed to the source below, not measured by a SENTINEL node. The next-block projections are ESTIMATED — transactions ordered by fee rate and packed to the 4M weight-unit consensus limit, and labeled as such. If Bitcoin generates the data, SENTINEL measures it directly or tells you where it comes from.

Network signals LIVE · INFERRED

A shareable, always-on snapshot of the chain right now — fees, mempool, the last block, difficulty and issuance. Every number is INFERRED and attributed to its source; the card links back here.

Mempool anomalies LIVE · INFERRED

The mempool's own out-of-the-ordinary signals — fee spikes, mempool surges, block droughts and empty blocks. Each card is INFERRED and attributed to its source, and shareable with a link back here. The all-verticals unusual-events feed lives on the homepage.

Next blocks PROJECTED

What miners would assemble from the current mempool if they packed by fee rate right now. Ordering is an estimate; the transactions and their fees are real.

Network INFERRED

Difficulty-epoch progress and the halving countdown. Epoch position and block counts are consensus arithmetic on the current tip; the projected retarget magnitude is the source API's estimate, attributed below.

Mempool now INFERRED

Fee recommendations

Marginal fee rate (sat/vB) to be included within the target depth, derived from the projected blocks. The economy and minimum rates track the source API's reported relay floor.

Depth by fee rate

How the current backlog is distributed across fee-rate bands (virtual bytes). INFERRED from the source API's mempool, attributed below.

Incoming transactions LIVE · INFERRED

The most recent unconfirmed transactions seen by the source API, newest first — value moved, fee and fee rate.