Proton's design is to only store your keys encrypted (by your browser or app) on their servers. The same privacy model you have with ProtonMail. The BDK based wallet code also runs locally in your browser (wasm) or phone app.
The code is open source so you're welcome to see exactly how it works. Certainly a trade off of user experience vs security, but better than the closed, fully custodial systems out there.
https://github.com/ProtonWallet/andromeda
notmandatory /
npub1ke…f8jfm
2025-03-20 04:43:49
in reply to nevent1q…5ymg
Author Public Key
npub1ke470rdgnxg4gjs9cw3tv0dp690wl68f5xak5smflpsksedadd7qtf8jfmPublished at
2025-03-20 04:43:49Event JSON
{
"id": "5cf60d8d5a7bb7ad357ddd35f20a7ad386485eafd7a55a9d9c7ced81206139c3",
"pubkey": "b66be78da89991544a05c3a2b63da1d15eefe8e9a1bb6a4369f8616865bd6b7c",
"created_at": 1742445829,
"kind": 1,
"tags": [
[
"e",
"d5dcd3f6feee9dfa314f65eb727558c382ee90cd390b13a796e3d9280effc118",
"",
"root"
],
[
"e",
"a9af39a95d246f9c3939fb7476f5b846e46448a6cb4afa74313ff73aa766462a",
"",
"reply"
],
[
"p",
"b66be78da89991544a05c3a2b63da1d15eefe8e9a1bb6a4369f8616865bd6b7c",
"wss://nos.lol/",
"mention"
],
[
"p",
"6fd3915a55ad0c2eae64e2b818acbbae9c6b3d9b5ee44e19aa040fb09f0d3cdd"
],
[
"p",
"c7eda660a6bc8270530e82b4a7712acdea2e31dc0a56f8dc955ac009efd97c86"
],
[
"r",
"wss://nos.lol/"
],
[
"r",
"wss://purplepag.es/"
],
[
"r",
"wss://relay.getalby.com/v1"
],
[
"r",
"wss://relay.primal.net/"
],
[
"r",
"wss://nostr.btc-library.com/"
]
],
"content": "Proton's design is to only store your keys encrypted (by your browser or app) on their servers. The same privacy model you have with ProtonMail. The BDK based wallet code also runs locally in your browser (wasm) or phone app. \n\nThe code is open source so you're welcome to see exactly how it works. Certainly a trade off of user experience vs security, but better than the closed, fully custodial systems out there. \n\nhttps://github.com/ProtonWallet/andromeda",
"sig": "9f56370bf8d1f56201a9428c3e3dbae4035c7484190b9fc4bb6080bb329b4b5d70f683952bbaae5f4656866bf764e117407a12067fe26e47592d52f802067191"
}