Frostr

https://frostr.org

Stay frosty

Public Key

npub17uvdffljczhlpjfvfj0q30dmh4ugh8wlzm8u6w64y2v4ts7fqsqqj28tr4

NIP-05 Address

[email protected]

Profile Code

nprofile1qqs0wxx55levptlseykye8sghkam67ytnh03dn7d8d2j9x24c0ysgqqpz3mhxue69uhhyetvv9ujuerpd46hxtnfdu3k0543

Publishing to

relay.damus.io

Author Public Key

npub17uvdffljczhlpjfvfj0q30dmh4ugh8wlzm8u6w64y2v4ts7fqsqqj28tr4

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Last Notes

2026-04-14 00:26:41 CEST

FROST needs 2 rounds.
Most implementations run each round at signing time.
Frostr v2 uses persistent Nostr relay connections that keep signers hydrated with nonce commitments in the background.
Time to sign? Round 1 is already done.
Same protocol. Same security. Near instant!

2026-04-09 20:42:12 CEST

Cooking on the new V2 designs ❄️ https://image.nostr.build/6ce0d23a970a3cd6fe539725e191d4e2d6ef12f3a95f531b1edc9dcd32498cdf.png

2026-04-09 01:05:57 CEST

Split key into shares.
M-of-N signs.
No single party ever holds the complete key.
The signature that comes out is a standard BIP-340 Schnorr.
Indistinguishable from a single signer.
Nobody ever knows...

2026-04-07 22:02:15 CEST

For Nostr to scale, private key custody MUST work for:
- indivduals
- organizations
- agents

2026-04-03 19:52:14 CEST

What if your keys could talk to each other e2e encrypted over relays 🤔

2026-04-01 01:19:38 CEST

New glossary page on frostr.org !
Learn the terms that make the magic happen https://image.nostr.build/e344a137b291869ebe071d4775e983b46e608c5080d3c247a6d34c8cc8242982.jpg

2026-03-29 20:57:33 CEST

A compromised device does not have to mean a compromised identity

2026-03-28 22:11:58 CET

Agents don't need full key access.
They need scoped access, clear boundaries, and a signer flow that doesn't break under real use.

2026-03-23 20:10:47 CET

STANDBY:
V2 protocol is built out.
App updates coming soon
Seamless dynamic threshold signing over nostr for you (and your agents)
Imagine the possibilities...

2026-03-17 20:29:15 CET

Igloo Signer is now on iOS App Store!
This first release is intentionally simple and for early adopters:
a background signer powered by our background soundscape approach (works with any existing Frostr keyset)
Next up:
• in-app signing
• major V2 protocol improvements https://blossom.primal.net/5ba384098c55583b5b4647bc622cb683edc91bc185fbde0a7df8decfea4402f6.jpg

2026-02-07 18:23:21 CET

Frostr today is the BEST way to give an agent limited and scoped access to your NSEC
Gonna be streamlining this soon https://image.nostr.build/4e7273dabd273fb5ba852b06e41dc2f24a1a0bfaa69466d8a9ba0b90ed9fd97e.png

2026-02-05 01:32:55 CET

Igloo Desktop v1.0.3 is out ❄️
🧭 Better onboarding
📥 Add Share / import flow
📡 Smarter relay planning (fewer weird edge cases)
🔐 Security hardening + typed IPC bridge
Get it: https://github.com/FROSTR-ORG/igloo-desktop/releases/tag/v1.0.3

2026-02-04 02:20:37 CET

Igloo IOS testflight is a nostr threshold signature experiment happening in real time!
#nevent1q…dd7m
Join the testflight now: https://testflight.apple.com/join/72hjQe3J
https://plebdevs-bucket.nyc3.cdn.digitaloceanspaces.com/videos/frostr/igloo-ios-testflight-2-of-2-experiement.mp4

2026-02-02 23:05:39 CET

Igloo iOS app is live on TestFlight!
- New Demo Mode for quick run‑through!
- Currently the signer only runs in the background and can’t publish new notes (coming soon though)
Your feedback is appreciated!
join now 👇
https://testflight.apple.com/join/72hjQe3J
https://plebdevs-bucket.nyc3.cdn.digitaloceanspaces.com/videos/frostr/igloo-ios-testflight-launch-demo.mp4

2026-01-30 01:08:21 CET

YES LET'S GO! Invites coming out soon
#nevent1q…psal https://image.nostr.build/9191f820efba0db9634a1b1018624c4b0670fbd6822a9c77a7abc8884d9cb01a.png

2026-01-27 22:35:56 CET

Showing off some of the magic that will be shipping with BifrostV2! (big update to our core library in development)
How we plan to use nonce pools to keep Frostr requests fast and single round
https://plebdevs-bucket.nyc3.cdn.digitaloceanspaces.com/videos/frostr/frostr-random-bifrostv2.mp4

2026-01-26 19:48:17 CET

Ok done complaining lol time to get to work

2026-01-26 19:47:41 CET

Apple is Nostr's inverse.
Nostr: free, open, easy to build on, permissionless distribution.
Apple: paid, closed, painful to build on, gated distribution
#nevent1q…v7zj

2026-01-26 19:47:39 CET

Apple is Nostr's inverse.
Nostr: free, open, easy to build on, permissionless distribution.
Apple: paid, closed, painful to build on, gated distribution
#nevent1q…v7zj

2026-01-26 19:40:21 CET

- reply

Ahh of course we forgot the backdoor! 🤪

2026-01-26 17:41:52 CET

GM - We we're rejected by Apple (for just a Testflight) with no feedback... Fuck this dystopia https://image.nostr.build/9119965e80e4b1f2305bb1883a103d1de5ee0e540ec47a124d4154dc560b2cc1.png

2026-01-21 23:20:45 CET

Will be sending out first testflight invites tomorrow 😤
#nevent1q…9pus

2026-01-20 23:15:49 CET

Pushing for IOS testflight asap - pray for me frens

2026-01-16 22:14:33 CET

Buildout of the our V2 Frostr core library is under way 😤 (written in rust btw)

2026-01-15 22:14:13 CET

Really, we just want to get Frost to work great for signing notes over relays so we can start signing Bitcoin transactions over relays ¯\_(ツ)_/¯

2026-01-11 20:31:52 CET

Better onboarding instructions / guidance coming soon to igloo apps!
We are working to simplify understanding of Frostr within our apps along with doing FAQ and Glossary soon! Lot's of work to do still to make this truly "easy" but it is all possible. https://image.nostr.build/22862554315a7a45133ae32024d775a55f56907d889df58695137ec558375705.png

2026-01-09 23:58:02 CET

Well that was easier than I thought... Thanks @npub16c0…6nvr 😅 https://plebdevs-bucket.nyc3.cdn.digitaloceanspaces.com/videos/frostr/igloo-ios-bg-signing-prototype.mp4
#nevent1q…3qjd

2026-01-09 23:58:01 CET

Well that was easier than I thought... Thanks @npub16c0…6nvr 😅 https://plebdevs-bucket.nyc3.cdn.digitaloceanspaces.com/videos/frostr/igloo-ios-bg-signing-prototype.mp4
#nevent1q…3qjd

2026-01-09 18:09:29 CET

- reply

Yeah will definitely look into this thanks for the reminder!

2026-01-09 00:59:58 CET

Thinking about two different ways of supporting frostr signer on iOS.
One is to just copy primal and use the audio player for keeping background signer online, but who knows if I could get the app approved - also I would hate to copycat so quick and bandwagon onto this workaround, but hey if it works well??
The other way is doing push notifications; which I think I found a way to do very privately where no events are stored and we will have no idea whose device tokens are being held. However that still requires storing device tokens and also running a server which I really wanna avoid doing.... There are definitely more ways around this. There’s a lot that is technically possible, but with Apple, you have the additional question of will they even allow you to release this?? Such an interesting problem, there is no right answer!

2026-01-07 18:11:59 CET

Wow really groundbreaking stuff from Primal! This is super inspiring for us as we're trying to figure out best approach for IOS background signing at this moment!
It's possible we might even be able to highjack this functionality to work with Frostr without any code changes?? Will report back 🤔
#nevent1q…qul8

2026-01-06 20:12:18 CET

igloo-cli version 1.0.2 has just been released!
- QR codes in CLI for sharing credentials (toggle with Q)
- Improved visuals: animated FROSTR intro + cleaner layout
- Refactored arg parsing with better flag handling
- 100 new tests massively increasing coverage
Use igloo-cli to create a new Frostr keyset OR just run it as a signer: https://github.com/FROSTR-ORG/igloo-cli/releases/tag/v1.0.2 https://video.nostr.build/dc3629175682d76826159fc66c0439573e776a5b6473e30903ecab7d2c41f1fd.mp4

2026-01-05 20:37:02 CET

- reply

If you store your entire nsec in nsec bunker AND you use frostr than you will be effectively duplicating the private key (one in a hot server with nsecbunker and one in a distributed set of signers with frostr) so kinda self defeating. You can do 3/5 though! Just configure your "peer policy" carefully. Check out the igloo-server demo video here for a good simple setup of frostr WITH nip46 (so you can still use nostr connect): #nevent1q…3wes

2026-01-05 20:34:01 CET

opus 4.5 is one of the smartest coding models in the world right now but I still struggle to get even the frontier LLM's to be able to grasp a lot of protocol details of Frostr when working with features in the code or docs.
So either we are still (a little) smarter than the AI OR we are just retard maxxing too hard (likely)
#nevent1q…wqm2

2026-01-05 20:31:10 CET

Yes you could setup a 3/5 with frostr! It would be best to keep the nsec offline and cold after setup. It is worth understanding though that Frostr uses a "trusted dealer" setup of Frost meaning that the nsec WILL be known and contained on one computer in order to setup the 3/5 initially so basically you need at least one "trusted dealer" to setup the quorum
#nevent1q…w2t7

2026-01-05 20:26:39 CET

With frostr your keys DM each other to sign notes 💜 https://image.nostr.build/79617e702160aa4d9db2bf5c3f132e3215645267fcebb483430257ec3e81a2a6.png

2026-01-05 01:55:41 CET

Working on nip46 frostr stuff with opus4.5... Bro doesn't stand a chance 😂
#nevent1q…t3c7

2026-01-03 20:03:17 CET

- reply

Bullish on you wizard!

2026-01-03 20:01:26 CET

Share it brother!
#nevent1q…guyd

2026-01-03 00:04:16 CET

Absolutely! But we never wanted to change standards we just need them to be implemented consistently (and actually work lol)
We are working on proposals internally though and also FIRST wanna do everything we can on the side of our apps / libs to make the experience as clean as possible (before proposing spec changes)
#nevent1q…38dv

2026-01-02 23:28:52 CET

Should clarify - nip07 is quite simple and standardized across the ecosystem! Barely have run into issues with how the spec is implemented on clients BUT it is (mostly) trapped in the extension environment...
#nevent1q…6eap

2026-01-02 23:26:48 CET

Frostr adds threshold signing to Nostr; no protocol changes! We integrate with NIP-07/46/55 so signed notes look completely normal to clients and relays (no one can tell you are threshold signing)
The reality: every client/signer implements these specs differently...
This fragmentation is our biggest challenge! Frostr hopes to be boring and simple but the ecosystem needs more standardization to realize this dream

2025-12-24 15:13:56 CET

Igloo Android App (alpha) is here! - https://github.com/frostr-org/igloo-android/releases
Will say more later 👀

2025-12-24 01:56:16 CET

Thinking about partially signed notes 🤔

2025-12-17 23:24:04 CET

Say hello to Igloo Web - the easiest and most lightweight way to run a Frostr signer!
https://image.nostr.build/75176daf74bb7739f35323376ce569063b59103a42102a3a70305ead860e9616.png
https://iglooweb.app
https://github.com/frostr-org/igloo-web

2025-12-13 19:28:24 CET

Here's a diagram I made for NIP-46 signing flow with Frostr...
- nostr client sends nip46 request to relay
- igloo server listens for nip46 request
- approves
- passes to other signer (igloo-cli) for partial sig
- gets response from cli and completes sig
- passes back to relay
- nostr client receives signed note and publishes to relays
All of thise happens within like 2 seconds wtf
https://blossom.primal.net/eae9090da662ad95cfca8ffb84fa7fda4a6b1a25929a942355a200a022f441d0.png

2025-12-12 22:56:25 CET

Yes they are! - #nevent1q…y7sd
#nevent1q…44yj

2025-12-12 22:11:41 CET

Key rotation is done manually still - you need the threshold of shares within that keyset (2/3 for example) locally in order to recover the nsec, this does not happen over nostr in some fancy protocol manner (only signing does)
shares are only valid within a keyset meaning that if you have a 2/3 and you lose a share IF you destroy the other 2 shares than the third stolen share is ORPHANED.
So to rotate at this time the steps are:
- Recover nsec with threshold of shares
- Use that nsec to generate a new keyset (can be any threshold)
- DESTROY the shares in the old keyset
TLDR; DESTROY AND OPRHAN https://image.nostr.build/5fda47cbab5db15bb8576fcd8a944dce0a46b2bb612634fe0ed4c193dc830cf8.png
#nevent1q…7xua

2025-12-12 22:11:39 CET

2025-12-12 22:04:11 CET

- reply

Legend! TY 🤝

2025-12-12 22:00:38 CET

Split your nsec into a multisig
The keys of that multisig talk to each other over nostr to sign notes
#nevent1q…a9s9

2025-12-12 21:57:22 CET

Rumors that first version of Frostr android signer will be released next week!?!?! Can't trust what you hear nowadays though...
#nevent1q…s9tw

2025-12-12 20:30:41 CET

Happy Friday - Frostr can now run on Umbrel ❄️ 🤝 ☂️ https://plebdevs-bucket.nyc3.cdn.digitaloceanspaces.com/videos/random/igloo-server-umbrel-announcement.mp4
Version 1.1.0 of igloo-server can now be added as an easy to run app on your Umbrel through the Community App Stores feature.
Just click on the ... in the top right of app store and add https://github.com/frostr-org/igloo-server-store as the url - then install and you'll be up and running in no time! https://image.nostr.build/b9c617918c3e46f7ec043a5be21093b4ed836403d72da662c63d9cbfc6d96063.png https://image.nostr.build/2de4ef1d5259750c90ca0cdaeadfc058f43474c5e0faaad944df495dc08d9f5d.png

2025-12-12 01:25:15 CET

Gotta have that dawg in you
#nevent1q…lgkk

2025-12-12 01:15:05 CET

Also yes, frostr uses frostr for nostr. We eating our dogfood now!
#nevent1q…xmm9

2025-12-12 01:01:56 CET

Hello world!
Frostr is a fully open-source protocol + app suite that lets you:
• Split your existing Nostr key into any threshold (2/3, 3/5, etc) 
• Sign notes using simple Frostr apps that coordinate over Nostr 
• Use NIP-07 + NIP-46 in any Nostr client 
• Recover your nsec on any device with your threshold 
• Rotate / expand your setup anytime 
• And do it all without creating a new key 
We’ve got some cool updates shipping soon! Keep an eye out  https://frostr.org https://image.nostr.build/0edc3728f5cd03c3129a7362dc4aa43ac751703a822f4d3c432f4c159caf8446.png