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chain: use neutrino filters to speed up bitcoind seed recovery #889

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chain: use neutrino filters to speed up bitcoind seed recovery #889

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Commits on Sep 29, 2023

  1. chain: refactor btcd filter rescan into maybeShouldFetchBlock 

    We also abstract how blocks are fetched in the first place, as bitcoind
uses a different name for the RPC to fetch filters.
    @Roasbeef
    Roasbeef committed Sep 29, 2023
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  2. chain: use neutrino filters to speed up bitcoind seed recovery 

    In this commit, we use neutrino filters to speed up bitcoind seed
recovery. We use the recently created `maybeShouldFetchBlock` function
to check the filters to see if we need to fetch a block at all. This
saves us from fetching, decoding, then scanning the block contents if we
know nothing is present in them.

At this point, we can also further consolidate the `FilterBlocks`
methods between the two backends, as they're now identical.
    @Roasbeef
    Roasbeef committed Sep 29, 2023
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