Short answer: BIP-85 deterministic entropy.
The magic of BIP-85 is that you can generate multiple seeds from a single parent. The app uses the Recovery Key as the parent to create hot keys. It is done on the user’s device when the app is created new or when it is recovered...
bitcoinkeeper_ / Bitcoin Keeper
npub1ml…t2t6p
2024-07-05 13:00:07
in reply to nevent1q…34ax
Author Public Key
npub1mlzukkwhuhl3y7wd6kw20fz6s99l8d0uqtj4sskhvaaud8rwcuuszt2t6pPublished at
2024-07-05 13:00:07Event JSON
{
"id": "f6b6c552c4f169c733ee690df79a2ae9570611715d36421d28e5af2edbf3d8d3",
"pubkey": "dfc5cb59d7e5ff1279cdd59ca7a45a814bf3b5fc02e55842d7677bc69c6ec739",
"created_at": 1720184407,
"kind": 1,
"tags": [
[
"e",
"63309ccfbfe7ba6d8ed42fa105296583ee241dbb567d8115ab4b36fc4c656d36",
"",
"root"
],
[
"e",
"7bb10664f0843554280de1a6e75cdfe665a0e8fdd19a63668f1d34887a281680",
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[
"p",
"dfc5cb59d7e5ff1279cdd59ca7a45a814bf3b5fc02e55842d7677bc69c6ec739"
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],
"content": "Short answer: BIP-85 deterministic entropy. \n\nThe magic of BIP-85 is that you can generate multiple seeds from a single parent. The app uses the Recovery Key as the parent to create hot keys. It is done on the user’s device when the app is created new or when it is recovered...",
"sig": "6e0a2e585c0f9c4117c2ae68b44448858f0951649a8dd83f216362370e699653e97deeaeef167afa6c57c1f269831c0c3db06d00895119e9ca57368cc9c1feac"
}