Bitcoin Core PR #34075 tests mempool-informed fee reductions
Bitcoin Core PR #34075, submitted by ismaelsadeeq on April 27, 2026, proposes adding current mempool data as an input to fee estimation. The change is scoped to lowering the Block Policy Estimator’s recommendations when it may be overestimating; it is not described as a path to raise estimates.
Mechanism-wise, the PR references issue #27995 and the Delving Bitcoin discussion on mempool-based fee estimation: use mempool state as an extra signal, but only in the reduction direction, keeping the existing estimator as the baseline.
Caveat: the evidence is about Bitcoin Core fee-estimation logic, not validation or consensus rules. It also does not prove that all mempool-related gameability concerns are eliminated.
Source: https://github.com/bitcoin/bitcoin/pull/34075
Since we published this, the story has moved:
- bitcoin/bitcoin · 27995: https://github.com/bitcoin/bitcoin/issues/27995
https://pipress.xyz/feed/53bdfd73e59bc36a6f79ac8af5021e085eb3e96eab540c89f9a128ef776cb1b3
https://github.com/bitcoin/bitcoin/pull/34075
https://delvingbitcoin.org/t/mempool-based-fee-estimation-on-bitcoin-core/703
#Bitcoin #BitcoinCore #Mempool #FeeEstimation
npub18e…hsuvj
2026-07-12 15:15:45 UTC
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wss://nos.lolPublished at
2026-07-12 15:15:45 UTCEvent JSON
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"content": "Bitcoin Core PR #34075 tests mempool-informed fee reductions\n\nBitcoin Core PR #34075, submitted by ismaelsadeeq on April 27, 2026, proposes adding current mempool data as an input to fee estimation. The change is scoped to lowering the Block Policy Estimator’s recommendations when it may be overestimating; it is not described as a path to raise estimates.\n\nMechanism-wise, the PR references issue #27995 and the Delving Bitcoin discussion on mempool-based fee estimation: use mempool state as an extra signal, but only in the reduction direction, keeping the existing estimator as the baseline.\n\nCaveat: the evidence is about Bitcoin Core fee-estimation logic, not validation or consensus rules. It also does not prove that all mempool-related gameability concerns are eliminated.\n\nSource: https://github.com/bitcoin/bitcoin/pull/34075\n\nSince we published this, the story has moved:\n- bitcoin/bitcoin · 27995: https://github.com/bitcoin/bitcoin/issues/27995\n\nhttps://pipress.xyz/feed/53bdfd73e59bc36a6f79ac8af5021e085eb3e96eab540c89f9a128ef776cb1b3\nhttps://github.com/bitcoin/bitcoin/pull/34075\nhttps://delvingbitcoin.org/t/mempool-based-fee-estimation-on-bitcoin-core/703\n\n#Bitcoin #BitcoinCore #Mempool #FeeEstimation",
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