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author | Antoine Riard <ariard@student.42.fr> | 2019-12-10 18:08:21 -0500 |
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committer | Antoine Riard <ariard@student.42.fr> | 2019-12-18 13:31:32 -0500 |
commit | f41d58966995fe69df433fa684117fae74a56e66 (patch) | |
tree | d33b90c0f525fcead4a12777766da32b60fa0e3a /doc/descriptors.md | |
parent | 3d6752779f0504e6435fe682f0c06c60b5c4c33b (diff) | |
download | bitcoin-f41d58966995fe69df433fa684117fae74a56e66.tar.xz |
Document better -keypool as a look-ahead safety mechanism
If after a backup, an address is issued beyond the initial
keypool range and none of the addresses in this range
is seen onchain, if a wallet is restored from backup, even in
case of rescan, funds may be loss due to the look-ahead
buffer not being incremented and so restored wallet not detecting
onchain out-of-range address as derived from its seed.
This scenario is theoretically unavoidable due to the requirement
of the keypool to have a max size. However, given the default
keypool size, this is unlikely. Document better keypool size
implications to avoid user setting a too low value.
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