This is in the Alby browser extension, client side. So Alby itself won't have your nsec key. You can sign nostr events by the browser extension.
You can check this by their free open source code. https://github.com/getAlby/lightning-browser-extension
Jurjen de Vries
npub1l77…swft
2024-05-17 15:28:51
in reply to nevent1q…e6dy
Author Public Key
npub1l77twp5l02jadkcjn6eeulv2j7y5vmf9tf3hhtq7h7rp0vzhgpzqz0swftPublished at
2024-05-17 15:28:51Event JSON
{
"id": "fd8b158db0409e68d412ac1e433b5bb1596a0fa1856f61ced1ceba0dea42c11f",
"pubkey": "ffbcb7069f7aa5d6db129eb39e7d8a9789466d255a637bac1ebf8617b0574044",
"created_at": 1715952531,
"kind": 1,
"tags": [
[
"e",
"ffea7f9c0bafa78650f743d6b1895ed91e2aa9efb510a9ab747a30e1555b46c3",
"",
"root"
],
[
"p",
"1bc70a0148b3f316da33fe3c89f23e3e71ac4ff998027ec712b905cd24f6a411"
],
[
"r",
"https://github.com/getAlby/lightning-browser-extension"
]
],
"content": "This is in the Alby browser extension, client side. So Alby itself won't have your nsec key. You can sign nostr events by the browser extension.\nYou can check this by their free open source code. https://github.com/getAlby/lightning-browser-extension",
"sig": "7f0369754ce389d1ae0f2c817984c05d668099097b26cdbbea9c46326820da6cd3520adbb007237b6959664bbd0d187f4fd26441d24d04447a159b652d7b3f34"
}