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Amber 6.6.9

Nostr event signer for Android

filecart Android Updated Oct 14, 2026
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About Amber

Amber is a nostr event signer for Android. It allows users to keep their nsec segregated in a single, dedicated app. The goal of Amber is to have your smartphone act as a NIP-46 signing device without any need for servers or additional hardware. "Private keys should be exposed to as few systems as possible as each system adds to the attack surface," as the rationale of said NIP states. In addition to native apps, Amber aims to support all current nostr web applications without requiring any extensions or web servers.

License: MIT
Release info Update on Oct 14, 2026
Release notes Amber 6.6.9
• Fix nostrconnect:// connections approved from the multi-request screen never getting a reply, and reply on the relays from the nostrconnect:// URI
• Group the multi-request screen by app, showing each app's name, icon and request count, and keep "remember my choice" per app
• Fix revoked permissions that could keep working until the cache was cleared, and respect reject rules for fully trusted apps (GHSA-8f7m-9g64-vrjw)
• Clear a copied nsec, ncryptsec or seed words after 60 seconds even when Amber is in the background or was closed (GHSA-g62f-m6pm-jv9p)
• Fix possible loss of the nsec and seed words when changing the "require unlocked device" setting (GHSA-wv7c-hq2j-ppc5)

Download it with Zapstore, Obtainium, f-droid or download it directly in the releases page

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Verifying the release

In order to verify the release, you'll need to have gpg or gpg2 installed on your system. Once you've obtained a copy (and hopefully verified that as well), you'll first need to import the keys that have signed this release if you haven't done so already:

bash
gpg --keyserver hkps://keys.openpgp.org --recv-keys 44F0AAEB77F373747E3D5444885822EED3A26A6D

Once you have his PGP key you can verify the release (assuming manifest-v6.6.9.txt and manifest-v6.6.9.txt.sig are in the current directory) with:

bash
gpg --verify manifest-v6.6.9.txt.sig manifest-v6.6.9.txt

You should see the following if the verification was successful:

bash
gpg: Signature made Fri 13 Sep 2024 08:06:52 AM -03
gpg: using RSA key 44F0AAEB77F373747E3D5444885822EED3A26A6D
gpg: Good signature from "greenart7c3 "

That will verify the signature on the main manifest page which ensures integrity and authenticity of the binaries you've downloaded locally. Next, depending on your operating system you should then re-calculate the sha256 sum of the binary, and compare that with the following hashes:

bash
cat manifest-v6.6.9.txt

One can use the shasum -a 256…
Listing dataF-Droid

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