m1sterc001guy
Justin

#Bitcoin
Github: https://github.com/m1sterc001guy

Public Key

npub1zswjq57t99f444z6485xtn0vfyjjfu8vqpnyj6uckuyem2446evqnxgc6x

NIP-05 Address

Profile Code

nprofile1qqspg8fq209jj56663d2n6r9ehkyjffy7rkqqejfdwvtwzva426avkqpp4mhxue69uhkummn9ekx7mqpzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgqg5waehxw309aex2mrp0yhxgctdw4eju6t0qyvhwumn8ghj7mnswfhhs7fwddexjum5v9c8x6ewd3mqrcrhwden5te0wfjkccte9ejxzmt4wvhxjme0y5erqamnwvaz7tmjv4kxz7fwdehhgmmndp5juamfdchj2v3swaehxw309ahx7uewd3hkcte9xgc8wumn8ghj7un9d3shjtnnd9sk6um5wghxxmmd9ujnyvrhwden5te0wfjkccte9cc8scmgv96zucm0d5hj2v3swaehxw309ahxvun9d3shjtnpwpcz7ffjxpmhxue69uhhyetvv9uhyuewdehhgmmndp5juamfdchj2v3swaehxw309aex2mrp0yhxuetcw3jhy73wvdhk6te9xgc8wumn8ghj7en9deexju3dwvhxumm5daeks6fwwa5kunnzvzh

Publishing to

relay.damus.io/%20wss://relay.notoshi.win/%20wss://nos.lol/%20wss://relay.siamstr.com/%20wss://relay.0xchat.com/%20wss://nfrelay.app/%20wss://relayrs.notoshi.win/%20wss://relay.nexterz.com/%20wss://fenrir-s.notoshi.win

Author Public Key

npub1zswjq57t99f444z6485xtn0vfyjjfu8vqpnyj6uckuyem2446evqnxgc6x

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Last Notes

2026-09-17 19:32:33 UTC

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Zapstore was the first app store it was published to
https://zapstore.dev/apps/org.fedimint.app

2026-09-17 18:52:36 UTC

Big news! Ecash App is now available for iOS!
Ecash App is a feature-rich, transparent Fedimint wallet, now available on iOS, Android, Linux, and macOS.
https://blossom.primal.net/3eead4cd0c0a69c0c8c19bf3658ac0c48be65d1797ce586a4c57543741883326.png
App Store: https://apps.apple.com/us/app/ecash-app/id6808289368
Google Play: https://play.google.com/store/apps/details?id=org.fedimint.app&hl=en_US
https://ecash.love

2026-07-08 19:25:30 UTC

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lmao, perhaps a little too close to fuck 😅
But IMO its a good fit. Server is already easy to run/open source and it's federated, so the trust is distributed (unlike Spark). And the LN gateway piece is already done and can easily be re-used. Users could swap between ecash or statecoins depending on their preference.

2026-07-08 18:47:40 UTC

Fuck it, maybe I'll try to implement a statechain Fedimint module

2026-04-20 21:50:48 UTC

It is interesting that the Spark FAQ doesn't mention the collusion risk between Spark Operators and previous coin holders
https://docs.spark.money/learn/faq

2026-04-08 16:05:16 UTC

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We didn't touch on it much but I can comment on it here. I'm a fan of both Spark and Ark, I think there's value in having many robust protocols on top of Bitcoin. They each have different tradeoffs. In my opinion one of the nice things about Fedimint is that the tradeoff is explicit: you need to trust a quorum of the guardians. Very easy for users to understand.
The tradeoff in Spark and Ark is a little less explicit for the user. In Spark, it is self-custody unless the operator colludes with a previous coin holder. Ark has final settlement but only if your transaction participates in a round. Since the rounds are somewhat long, in practice I think most payments will be out-of-round payments, which have a similar trust model to offline ecash spending (you are trusting the sender to not double spend you). Ark also has a liveness requirement for end users (which comes with a fee burden to refresh your vtxo), whereas in Fedimint the liveness requirement is on the guardians and fees are only required when transacting.
I'll also mention that Fedimint is less "centralized" in the sense that it is a goal to not just have one federation, but many federations. Spark and Ark both rely on a central operator, which is convenient for most use cases since as I mentioned in the show, it is easier for bigger companies to operator quality services with high availability. But users can't switch between operators (to my knowledge) and if they go down the whole system is likely just unavailable.
I think privacy has gotten better recently in Spark but originally it was pretty bad. Fedimint and ecash in general is obviously built with privacy as a core feature (but at the expense of the custody tradeoff). If I recall correctly as well, Spark hasn't implemented the blind signing that Mercury layer (original statechain implementation) had, which is confusing to me. Maybe that's being worked on.
But as I said at the beginning, the more solutions the better. Users should use what works best for them! I've said in a different post that I think a statechain implementation on top of Fedimint would be really cool. Fedimint is modular, so applications other than ecash can be built. If that module existed, it would be as easy to run a statechain operator as it is running and ecash mint today. Users could opt-in to using either ecash or the statechain, whatever they prefer. And the trust model would be slightly better since it would be federated. Someone should build it!

2026-03-19 18:43:45 UTC

The Fedimint Lightning Gateway is now live on Umbrel! If you want to provide liquidity to a federation using your LND node on Umbrel, give this a try.
https://apps.umbrel.com/app/fedimint-gateway

2026-03-10 17:59:23 UTC

Does WhiteNoise support editing group chat members? Wanted to make a group for our BitDevs but couldn't figure out how to do that. @nprofile…n0n6

2026-03-08 22:00:58 UTC

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How are you mainly interacting with him? TUI?

2026-03-02 04:32:38 UTC

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Amazing. I'm hoping to work on a Fedimint skill this week so this can be accessible to anyone.
Just curious, what system are you on that fedimint-cli release binary is incompatible?

2026-02-16 14:08:50 UTC

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Downloaded! Is there a stable rust library for the marmot protocol?

2026-02-07 00:38:57 UTC

Welcome to Mobimint! A signet Fedimint that is run entirely on a fleet of Android Pixel phones.
This is an experimental federation to test the stability of running a Fedimint guardian on an Android.
We've done a few transactions....and it works! It is fully setup with a Mutinynet gateway as well, so Lightning works.
Try it out. Just copy the below ecash into https://ecash.love or get some coins on https://faucet.mutinynet.com/
AwEEmMV6fQD9A0sJgAGOPGwUjV7Su9xuL0Gmjfp-GYuiqAit6G0svG9Hcm0hS5rjLtYAT6wQIGvU6nUfC2HmtSI7je8pSeumDhzVTXr84v2Ru4EPA4Rovew3l-T2-_0CAAGw7ucaiUf1n_spHnBbbhIJRVHuNg8UXgEWGUBP4yAF43BtlOxgUhfDl5y5XVFfH91adbGYpkwPoVlaZuq8fJZYM_S2jWLvHF1QoSATAYoZgf0EAAGUmfgYXKvY8atbDAPHTAuGzbVkmyatmZye9zS3oeD4lUB7RcGKPep3DoYnmQxcd-ilpK__aVFnBwcIQi7pe2Yfm3l5bXdc9JLULmyiZtQ6ev0QAAG0_5_4QFwqofEOR9yQOw-Jy2FgTaoLnthwy-EO7UkvfKpnjHgfSZ4tue1EXPgrtGb3gbxP_PYWfSXHm1gpujKBJWpAl_DUcGCPoUk3dVxl_f2AAAGhZhpL-bFOXpdUkRWOBz10bhwJEIVQ1VdpWsUebuJzteeffHF7CZ5DyGPfVg4xz-x5adP5zZ-mj4mZxJJBPW8yxvgfD4dlchGiJ7F0Xnvldv4ACAAAAZcs2jfKFuHBm_gcpzvQ2mNrnY9slJoEyTSUPE8bQ9Wbkt9E_U3-00IsQTrp6vXqf1Vvbsqyn6iQlipde_50JhmekfVjl4fd0OT8wkj7rKdb_gAQAAABilE2-HAUm6Yx-Rm0X7xbBLAq4SFufxiJ8u96eQuDzA-QVAQmHNo1btG2mkIom4LWVJRYg-hgrMtmfTSPtnNizZXxR16sf52LqbmaZTYUAFD-ACAAAAKFwc9AW8x4Zno4Uq0ZpDnGpf8uvgEwhXQMgBFsi9v7EvsXmdp2etZYuIE9EsmT9u7NebgZcyjlLOckd-C7oZ5mPfBbUf51ZtuVZaXU0BaRq7aazK9EDd9a8L58ejolLqVdjDExtQbBRfAORiuz7AQZq0KOcIZSMzHY2aiWa3wM9_4Ai4ZmAtTszkMmvWszuh1eCMXHq70NeLRADLzfN5qC_gBAAAABsgHtbLk1JBGYmjK-JkG_DKsM9kp2zrKloxvlDFNBbc85u0PeH_hMlaoUmL6uGMcE-CyQ9YBRru2O3IRQTwXNK_6QRm1yrZ-WaMYTKupAyVoCagEAR2lyb2g6Ly82Mjk4YmI3Y2E3NmQ1MTg1NjZiNDMyY2I3MmMwNGExNjc3M2Q3ODk3YzgwNzFjYTRkNzM3Y2M3MGI0ZmIwYTRkmMV6ff1gJMkrtS4aFFOFleygP7okLisJa0Dl801W7SU= https://blossom.primal.net/2dda5889914c8a879a074a8b39537066496725310ced8d84f63a32015490c3a8.jpg

2026-01-28 18:35:23 UTC

So OpenCode doesn't work with Claude anymore? :/

2026-01-23 20:53:37 UTC

Who says you can't ship things on a Friday?
New Ecash App Release! (v0.4.0)
https://ecash.love/ or on Zapstore
- Improves Nostr Wallet Connect handling on Android
- Adds more fiat currency displays
- Number pad improvements: can input amount in fiat currency now
- Deep link support (Android will now include Ecash App when handling lightning and lnurl links)
- Shows pegin fees to user
- Greatly improved dev build system
- Iroh Gatewayd support

2026-01-20 17:00:49 UTC

This is pretty cool
https://hornetnode.org/paper.html

2025-12-03 03:50:09 UTC

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What is your opinion on The Sopranos?

2025-11-22 02:17:20 UTC

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"Speculative" energy money is a decent analogy imo.
Shitcoins are only for speculating, and if shares are a shitcoin, might as well speculate on them.

2025-11-21 20:26:19 UTC

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Very much so

2025-11-21 20:26:00 UTC

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Nope, didn't come up. Honestly I think most of those business can only use AI that is approved by their leadership. Perhaps a good opportunity for @nprofile…u4p9 though

2025-11-21 20:24:28 UTC

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That would have been interesting. Sadly the word "license" was also not mentioned at all either lol

2025-11-21 03:04:08 UTC

I went to a local "Open Source" happy hour this evening.
There was panel on how "AI is impacting enterprises" and they mostly focused on the dangers of how AI might take everyone's job. Lots of discussion about enterprises, board members asking about "AI Strategy", and how to impose guardrails for safe AI use.
Umm what exactly does that have to do with Open Source Software?
I don't think any of the panelists mentioned the words "open source" once.
Frankly not surprising, but still eye opening to see the disconnect that the Bitcoin ecosystem has from the broader tech community.
Open source is more than just dumping code on the internet.

2025-11-15 22:14:12 UTC

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I didn't select anything, not sure if the server did though

2025-11-15 20:50:53 UTC

Paying for beer using Ecash App on a Square terminal
https://ecash.love
https://blossom.primal.net/9d2221cb01cc712d5aa962e68255511e70c3a15dc9351505e86fc86891f8181c.mp4

2025-11-05 21:49:47 UTC

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Unfortunately not currently supported, you can make a new one though. We'll see if we can fix that in an upcoming update.

2025-10-30 20:41:10 UTC

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Fedimint can do this pretty easily since it supports onchain. We have this in Ecash App https://ecash.love

2025-10-30 03:18:46 UTC

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Been a long time (~10 years) since I've looked at any graph database, and I've never used Neo4j (I remember fighting with Giraph though, had a hell of a time getting that to compile).
I like this paper's assessment of graph databases: https://db.cs.cmu.edu/papers/2024/whatgoesaround-sigmodrec2024.pdf
TLDR is graph databases do have some performance optimizations over RDBMS due to the storage layout and optimized algorithms for common queries (shortest, ancestors, etc), but ultimately you can also represent a graph as a collection of tables. Recently some RDBMS systems have been adding graph-like query languages and have been optimizing joins for graph queries and they have been claiming better performance.
If you're not doing large OLAP queries or using it for other purposes, Neo4j seems like a pretty good fit for a Nostr relay.

2025-10-21 22:02:52 UTC

I'm curious what Nostr thinks of privacy vs auditability in ecash mints.
In Fedimint, all of the Bitcoin is held in an onchain multisig that is controlled by the guardians. In most deployments, this is a 3/4 (but it can be larger), which makes it painfully obvious onchain to third party observers. The UTXOs that a federation controls is also not private, they can be found by scanning the mint's history (which is public). This can be seen on https://observer.fedimint.org/ or using Ecash App (https://ecash.love). I think it is a nice feature to be able to see onchain all of the UTXOs that a federation holds (this could make something like proof of reserves easier).
Now, in a world where Fedimint has a taproot wallet (instead of P2WSH) and can use FROST/ROAST to sign peg-out transactions, it is no longer obvious onchain to third party observers which UTXOs correspond to a federation, since they can be spent using the keypath which looks like a normal taproot single-sig spend. However, as mentioned above, the UTXOs for the federation are still public, so a "fedimint-aware" third party adversary could still scan the mint's history and figure out the UTXOs.
I suppose we could come up with a scheme to keep peg-in UTXOs private from third party adversaries, which (with FROST) would have the benefit that it would be really hard to use onchain data and mint history to determine if a user is using a Fedimint. But this would come at the cost of easy auditability.

2025-10-19 12:46:14 UTC

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6-8pm

2025-10-12 14:34:43 UTC

Pumped for TabConf this week! I'm giving a workshop tomorrow at 12:30pm demoing Fedimint + Iroh. We will be setting up Mutinynet federations using Android phones. If you're there stop in and say hi!
https://evento.so/p/evt_94BoyvNoLxnTViJN

2025-10-10 19:02:37 UTC

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We have this in Ecash App (fedimint, not cashu though)
https://ecash.love

2025-10-03 19:02:33 UTC

Landing page for https://ecash.love just got a face lift. Go check it out!

2025-09-19 15:49:43 UTC

Just submitted a talk/workshop for TabConf! Give an upvote if you want to see it. Hope to see everyone in Atlanta
https://github.com/TABConf/7.tabconf.com/issues/83

2025-09-17 06:22:05 UTC

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What did you think of the soundtrack?

2025-07-31 14:42:35 UTC

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https://blossom.primal.net/53f993aba86a964454b27a8824b63826ddccbf123cb453cc33de5db9c3e7bf39.jpg
#nevent1q…jhel

2025-06-30 18:17:15 UTC

Curious what Nostr thinks about this idea:
A Fedimint module to be a "maker" on JoinMarket. A federation could earn fees (or the forbidden word "yield") on the backing reserves of the Fedimint. Currently the federation's funds do not move unless there is a pegin or a pegout, and the idea would be to put this capital to use in a non-custodial way. Could provide an incentive for running a Fedimint.
credit: @nprofile…lx6y

2025-06-21 02:10:23 UTC

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NWC already done!

2025-06-21 01:58:16 UTC

New Fedimint FOSS wallet inbound! Still finishing up all the features, like onchain and Lightning Address, but below is a sneak peak at the wallet. Shooting for a release later this summer or in the early fall.
Desktop and Android support, iOS at a later date.
What other ecash or Nostr features should we include? Feedback welcome!
https://blossom.primal.net/0a3fb192f2383abde578d8a16cafecfc63487293d372371c8ed2e4d1bb1d21dc.png
https://blossom.primal.net/2afb651d4a0657ba1b61d745023d1b1ecfd23b9581f9b7d4302827702fa38f41.png
https://blossom.primal.net/d6d1a69c683c24039205de9b6cc5a4f2a68f69a31c2e3f0f4af6db8107ff9794.png
https://blossom.primal.net/fa77cb92d36624898f5c8c908abd15b23e055264694927e5637425a080d61371.png

2025-06-18 20:52:37 UTC

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haha I used to live in Madison....but I suppose that doesn't count

2025-05-30 21:20:02 UTC

I am interested in purchasing some "smart home" devices for my house, like cameras and sensors. But I'm not really thrilled about using a cloud service or some server that is going to track my data.
Is anyone familiar with any low-friction self-hosted alternatives?

2025-05-20 02:40:42 UTC

We're doing trivia tomorrow at the Minneapolis Bitcoin Meetup! We will have a mixture of prizes, including a Bit Axe and a Minneapolis branded seed signer.
Nostr gets the sneak peak at the format and scoresheet that @nprofile…4ahn created
https://blossom.primal.net/22acef4a4489dabb18891ab7e2e405a73b893f9cca27a1563b09072cb8dcf6b0.png

2025-05-09 15:28:42 UTC

Minneapolis BitDevs is happening this Tuesday! Free food and drinks will be provided. We will be arguing about OP_RETURN, discussing SwiftSync, partitioning mempools, and more.
Happy hour at Indeed Brewing afterwards.
When: Tuesday May 13th 5-7pm. Socratic Seminar starts at 5:30.
Where: Improving Inc in Minneapolis. See website for details.
Agenda: https://bitdevsmpls.org/2025-05-13-socratic-seminar-27

2025-04-25 19:41:23 UTC

Myself and other open source contributors are building a new Fedimint wallet.
It will support multiple mints, NIP87 mint discovery, and connecting to federations via Iroh. Ideally LN Address and NWC as well.
What should we name this wallet?

2025-03-13 22:53:19 UTC

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Not necessary for guardians to run one. Similar to nostr, if a relay starts censoring traffic, someone else (could be a guardian) can spin one up and use that instead of the default

2025-03-13 17:17:41 UTC

On the Fedimint dev call today, we setup a demo federation using Iroh.
Iroh is fucking awesome. It allows each Fedimint guardian to talk to each other via a relay, sets up P2P communication using hole punching, and uses public keys as identifiers (which allows the servers to change their actual IP address).
Everything can run behind a NAT on your laptop or home server. No domain names, no cloud servers, no open ports. It took us just 15 minutes to set one up with zero networking issues.
Distributed systems magic.

2025-01-14 20:02:42 UTC

Minneapolis BitDevs is tonight at 5pm!
Not a developer? Not a problem. BitDevs is targeted for anyone that wants to further their understanding of Bitcoin. If you're going to hold Bitcoin, you might as well understand how it works
Where: Improving Inc
When: Tuesday Jan 14th, 5-7pm. Socratic Seminar will start at 5:30pm
Agenda: https://bitdevsmpls.org/2025-01-14-socratic-seminar-23
Food and refreshments are provided.
We will be discussing bitcoin privacy tools like Coinjoin and Coinswap, as well as a Lightning vulnerability (update your nodes!)

2024-12-19 22:03:00 UTC

Fedimint v0.5.0 is out!
https://github.com/fedimint/fedimint/releases/tag/v0.5.0

2024-12-11 04:54:35 UTC

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big if true

2024-12-10 19:00:12 UTC

What are the best resources for becoming familiar with miniscript?

2024-11-29 00:34:10 UTC

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Had a jar full of these growing up! Our dad paid us to sift through a giant jar of change and find them

2024-11-16 21:00:43 UTC

Is there an instagram-like app for Nostr?

2024-10-25 05:23:53 UTC

Onward an upward https://image.nostr.build/3e879b7a9e3bc9e8955bbd041193f8248c06254a7c99f7abfe94c4f444f5c89a.jpg

2024-10-21 23:34:15 UTC

My first podcast! I went on Build-a-Mine to discuss all things Fedimint. Check it out
https://t.co/MOzHhDVX3g

2024-10-18 15:29:00 UTC

Fedimint needs more wallets! No excuses anymore, the web SDK is here and is stupid simple to use.
https://web.fedimint.org/

2024-10-07 14:52:53 UTC

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Post link!

2024-09-11 03:30:26 UTC

Going to BitDevs instead of watching the Presidential debate was a fantastic decision

2024-08-27 14:03:26 UTC

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Fedimint has a prediction market module

2024-06-15 03:43:06 UTC

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Do you have the link to this writeup?

2024-03-27 16:02:24 UTC

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I'm here for the bee content

2024-01-31 21:10:37 UTC

Yesterday at the Minneapolis Bitcoin meetup, we launched The Minneapolis Fed, which is a Fedimint for our community. I think this is one of the first mainnet community-lead federations and I'm excited to see more federations pop up over the coming year.
We on-boarded attendees using Fedi and @npub1mut…23vg and even had a contest to see who could redeem a 100000 sat ecash note the fastest (shout out to Collin for winning).
Fedimint is still pretty early software so it was made clear that this is still somewhat #Reckless and to use with low value but given that v0.2.1 is the first stable release, we were eager to test it out with some real funds.
It was pretty cool to see federated ecash in action. I know we had an IRL ecash transaction for Real Bedford merch and some attendees reimbursed others for Keeper's Heart Old Fashions. Unfairly cheap too, our federation has no fees!
Given that this Fedimint is for the Minneapolis community, we will be keeping it small and mainly share invite codes during in-person gatherings. So if you want to try it out, be sure to attend a Minneapolis Bitcoin meetup or Minneapolis BitDevs https://bitdevsmpls.org
We are working on a guide that other communities can follow to setup their own federation. And over time this will get easier as we build tools to automate the deployment process.
Very fun meetup last night, thanks to everyone who attended and tried out Fedimint!
https://image.nostr.build/e1d1beff236e6474c7014a923f9c92dd4161c350595aad0f8b807c11677af590.jpg#m=image%2Fjpeg&dim=886x1920&blurhash=%5B65%3DR%25x%2CjbV%7CrWVxt7bWxaV%5BWBfPt-XMe-jKQknqa_X2pIkUWAe%3FkrWmWVj%5DQ%2CnUbcbWyZX0a%23jK&x=d7d32373ea1674d26a497988c154b499343773106d11c392238513a00e180888
https://image.nostr.build/6ebe37d821b84dbc4e07b14221fce27fbefbcd06558eed75b68a4bdd7690d418.jpg#m=image%2Fjpeg&dim=886x1920&blurhash=%5ByRfIHWVkCj%5Brqj%5BkCfQNbofj%40ay%3Fwf6aefQT0WBaej%5B%25Mj%40f6fQIAofj%5Bays9a%7Cj%5DfQITayfkj%5B&x=9072939eb66dcc527d36c0d134417fb7fae1f989fd4b5b8506a6f386f77b0c6a

2024-01-30 01:48:39 UTC

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Interested

2024-01-29 04:17:43 UTC

https://m.primal.net/HZgp.png
Mutiny + Fedimint is slick

2023-12-29 04:44:33 UTC

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Haven't heard of these guys...Black Sabbath cover band?

2023-12-12 04:18:08 UTC

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Was pretty awesome. Food was great and its always fun calling @npub1kw0…agdp out on his excuses :)

2023-11-25 01:46:14 UTC

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Zapped ya

2023-10-12 19:23:45 UTC

Pretty big change to Fedimint got merged last week. We switched the consensus algorithm from HBBFT to AlephBFT. This change should improve the latency of Fedimint transactions and also eliminates a lot of redundant code. Shout out to joshican for getting it merged!
https://github.com/fedimint/fedimint/pull/3313

2023-09-27 22:11:35 UTC

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CLN supports it

2023-09-23 13:58:23 UTC

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I use Magic Earth, which is decent and works offline. Its not great at finding locations when you don't have the address though, that's bit me a few times

2023-09-21 04:04:45 UTC

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Probably easiest to just whip out a lightning wallet and show them?

2023-07-21 02:54:51 UTC

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Happy everything worked! What can be improved?

2023-07-16 23:24:58 UTC

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😂

2023-07-16 19:36:13 UTC

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Some work being done to make fedimint easy to deploy on mutinynet

2023-06-17 15:51:58 UTC

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Demo at some point? Or maybe a qna on nix bitcoin?