BTC: Local Mempool Mean Entry Age

Bitcoin Local Mempool Mean Entry Age was 279,682.31 seconds on 9 Nov 2026 (latest daily value).

The arithmetic mean local entry age across captured transactions, in seconds.

Why use it. Read average residence in this node's mempool without size weighting. How to read it. Every transaction counts once; an empty population is undefined. Local entry age is neither coin age nor proof of network-wide waiting time. The hour/day point is the last actual accepted sample in that UTC bucket, not a time average. Earlier or missing samples and departed/replaced transactions are not reconstructed. Read capture clocks and gap coverage; a final sampling-period label does not confirm its transactions.

Calculation. Use one validated Core capture with consistent local clocks and dependencies. Sum exact capture-minus-entry seconds across transaction multiplicities, divide by count, and publish at 40 significant digits, half-even. Age is local capture Unix second minus Core-reported local entry second, not network first-seen time or expected confirmation wait. Transactions have equal weight; virtual size does not weight age. Only one local Bitcoin Core node is observed; this is not a worldwide mempool census or a confirmation forecast.