Issue Details

Number

30392

Title

Fee Estimation via Fee rate Forecasters tracking issue

Description

This is a tracking issue for an effort to add Fee Estimation with Forecasters (Mempool-Based Fee rate Forecaster) to Bitcoin Core. For the conceptual motivation behind this work, see issue #27995 and the previous discussion on Delving Bitcoin: [Mempool-Based Fee Estimation on Bitcoin Core](https://delvingbitcoin.org/t/mempool-based-fee-estimation-on-bitcoin-core/703). ### What to Review - #31664 ### Roadmap - [x] #30391 - [ ] #31664 - [ ] Create `estimatefee` RPC and Functional Test - [ ] Add Fee Estimation Traces - [ ] Add Feature to the Wallet ### Complete Feature - #30157 ### Future Plans for Fee Estimation with Forecasters after the [Cluster Mempool Project](https://github.com/bitcoin/bitcoin/issues/30289) - Add sanity checks to ensure it is safe to use mempool-based fee estimation without falling back to `BlockPolicyEstimator`, using ideas from [#27995](https://github.com/bitcoin/bitcoin/issues/27995) - Use heuristics from the mempool to target a higher/lower percentile in the mempool forecaster <details> <summary> <em>Related Work on fee estimation</em> </summary> ### Improving the current `BlockPolicyEstimator` in the Short Term - #30079 - #30275: - #30525 - [Delving Bitcoin Analysis](https://delvingbitcoin.org/t/bitcoind-policy-estimator-modes-analysis/964/1) ### Improving the current `BlockPolicyEstimator` after the [Cluster Mempool Project](https://github.com/bitcoin/bitcoin/issues/30289) - Make `BlockPolicyEstimator` package-aware: [Delving Bitcoin Post](https://delvingbitcoin.org/t/package-aware-fee-estimator-post-cluster-mempool/312/) ### Previous Refactors - [x] #28368 - [x] #29013 </details>

URL

https://github.com/bitcoin/bitcoin/issue/30392

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