blake
Blake Kaufman

Those are great points. We definitely need to make deleting a profile simpler — right now it requires a long press. And you’re absolutely right about the profile image: it’s currently saved as soon as it’s uploaded, but it really should only be stored after you tap Save.

2025-11-11 22:16:24 CET

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I’ll look into it now. Can you send yours so I can test with it.

2025-10-13 18:00:57 CEST

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Yes to both questions.

2025-10-10 17:41:47 CEST

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Yes

2025-10-10 17:41:30 CEST

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It’s a bit of a complex process.
https://docs.spark.money/wallet/developer-guide/unilateral-exit

2025-09-25 23:59:36 CEST

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I’m confused. Is there an issue here?

2025-06-28 03:40:28 CEST

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You might have to delete the old version to install the new one. I would suggest to send funds out of the old one before deleting and making sure your seed is written down. In all honesty it’s best to use the web app right now.

2025-06-28 01:19:19 CEST

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Here’s an example. Primal shows 5sats Damus doesn’t
https://image.nostr.build/82fe9102e748ba7cdeb7a9e89658d54f3904c5fb08939e9d58f3a623bd5d9e8e.jpg
https://image.nostr.build/c21cd25ee5eec72b9fb5b178ed2e0875b0d47ec4ec103c45c205b14142c4531e.jpg

2025-06-28 01:17:05 CEST

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It depends on the relays in the request. For example I can see some on primal and not on Damus.

2025-06-25 13:22:46 CEST

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Why is it a red flag

2025-06-25 04:12:04 CEST

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You should check out https://wallet.blitz-wallet.com — we’ve built a self-custodial web wallet that lets you instantly create an LNURL address and start receiving Lightning payments instantly.
Getting started is simple: just head to the Contacts section, add a username, and that becomes your LNURL address — in the format [email protected].
It’s powered by Spark.

2025-06-17 23:59:05 CEST

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More permissionless version of liquid.

2025-06-17 23:43:34 CEST

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Hopefully soon. Working with the spark team to get some bugs out.
Isn’t it awesome.

2025-06-17 23:37:31 CEST

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They're probably close to the same speed. Mine usually takes around 12ish seconds.

2025-06-17 23:36:34 CEST

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Got it. Spark payments are like Bitcoin payments so since I haven’t set up BIP21 QRs with amounts that’s why you have to enter a balance in.

2025-06-17 23:15:10 CEST

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Wait, this just happens for spark payments right?

2025-06-17 23:11:57 CEST

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Let me take a look. It might be because the lightning payment is defaulting to a Spark payment(since both are Spark clients) and so that’s why you have to enter the amount.

2025-06-17 23:06:21 CEST

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Love it! Is the web app the one not recognizing the amount? Or is a different wallet not recognizing the amount?

2025-06-17 22:36:44 CEST

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Ya, you’ll need to create another wallet on a different browser so you can send to a Spark address.

2025-06-17 19:27:01 CEST

Built something pretty cool 👀
A new L2 called Spark dropped a few weeks ago, and it instantly blew my mind.
So I went to work. Since then, I’ve built the foundation for a fully web-based, self-custodial Bitcoin Lightning wallet.
Here’s what it can do so far:
1. Send & receive sats instantly
2. Get your own LNURL address (e.g. [email protected])
3. Pay to Lightning addresses across the network
4. Same clean, updated UI as Blitz mobile
Try it👇
https://wallet.blitz-wallet.com
Built on Spark ⚡
Still early — feedback welcome!

2025-04-28 23:56:20 CEST

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Possibly in the future. Definitely something I would like to add.

2025-04-25 21:44:01 CEST

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I’d say so since technically you’re “using” the bitcoin. Best would obviously be spending sats directly if a merchant offers it, then buying a gift card from a bitcoin business.

2025-04-25 20:24:38 CEST

https://image.nostr.build/f992c4ab33a55b2d7acb0b383e623ee1351ae5fa821cd572020e0f482530f3e6.jpg

2025-04-23 15:30:24 CEST

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I’d love to be on the show.

2025-04-14 00:58:10 CEST

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Did that work?

2025-04-13 14:45:23 CEST

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And is that from google play or apk?

2025-04-13 05:09:20 CEST

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Probably, I have no way to test those. What do you mean by “not available”

2025-04-09 19:19:37 CEST

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Mostly stability. Some large goals are USDt support, LNURL addresses like misty breez, blitz premium (so it can be sustainable), and adding more app integrations.

2025-04-09 18:02:17 CEST

New release is live on all platforms!
With #cashu + Blitz Wallet, you can:
- Buy gift cards
- Get VPNs
- Access AI tools
- Swap Cash ↔ Liquid
- Send Lightning
- Pay to Liquid addresses
We also improved our built-in POS terminal!
🔽 Grab the latest version now!
🔵 iOS (TestFlight):
https://testflight.apple.com/join/r8MfbNa6
🟢 Android (Google Play):
https://play.google.com/store/apps/details?id=com.blitzwallet
Or grab the APK here:
https://github.com/BlitzWallet/BlitzWallet/releases/tag/Android-v0.4.3-beta

2025-04-07 22:36:45 CEST

One thing I think people forget sometimes is optionality. No one is the same therefore we cannot believe everyone will want the same thing. I think us Bitcoiners sometimes get too caught up thinking everyone is eventually going to think/want the same things as us instead of designing more versatile products to handle more cases.

2025-04-06 17:53:56 CEST

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You can download now on IOS:
https://testflight.apple.com/join/r8MfbNa6

2025-04-06 17:06:11 CEST

A Blitz Wallet Update is Live!
* Smarter tx sorting
* Seamless tipping w/ LNURL & contacts
* Custom eCash limits + store/contact payments
* Manual swaps now include eCash
* App works even if LN node is down
APK: https://github.com/BlitzWallet/BlitzWallet/releases/tag/Android-v0.4.2-beta%E2%80%A8Play Store + iOS pending approval
Live on zapstore
Detailed release notes can be found:
https://blitz-wallet.com/pages/blog/ecash-pos/
What we updated for Tips payouts:
You can now use LNURLs or Blitz contact names in the POS—track paid/unpaid, group by contact, and payout with one tap.
No more manual invoicing. No more friction.
What we updated for #cashu:
Set custom balance + receive limits, pay Blitz contacts, perform internal transfers, or shop the Blitz Store with sats held in eCash.
Now you choose how much to hold, how much to send
👇 POS + eCash updates in action
https://video.nostr.build/3d83e4f1833fa344b0ef2bd2e2b61aed4e1fe0dfb48bd0240e7bbc8b1975df04.mp4
https://video.nostr.build/b1a273556f44c4cdac21bd945b8484f72ced234a213b9ab3bad187aa8c0e2e36.mp4

2025-04-04 15:26:55 CEST

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Sorry, Xcode update broke any app running < react-native version 77 so I’ve been on a two-day bender updating my project so I can get the next release out. I’m glad you like it and this next version is going to be even cooler!

2025-03-26 04:05:45 CET

To whoever it may concern,
Google Play says Blitz Wallet is “not available in your region”?
Translation: “Download it from GitHub instead.”
https://github.com/BlitzWallet/BlitzWallet/releases/tag/Android-v0.4.2-beta
#bitcoin #GooglePlaySaidNoGitHubSaidYes
#BitcoinHasNoBordersButAppStoresDo
https://image.nostr.build/113b8617595d8a542f09c69264ea6b89aeeb039e4ee6cd181952707b7601a23b.jpg

2025-03-24 00:41:50 CET

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Wait sorry I was driving. What version 0.4.2 did you install? Playstore has a different certificate than apk.

2025-03-23 23:44:35 CET

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What was the last installed version you have?
If it was from a while ago I had the change signatures for the google play store. All you have to do is delete the old app, install the new version and restore your seed.

2025-03-23 16:58:17 CET

Last month I presented Blitz at a @npub1nyy…7gan developer bootcamp—diving into all things Blitz.
Now you can watch the full talk!👇
Link: https://m.youtube.com/watch?v=vPKQn3P5Xng

2025-03-21 17:42:16 CET

Thanks to the human rights foundation for highlighting our new release in their weekly update!
Check it out here:
https://hrf.org/latest/hrfs-weekly-financial-freedom-report-66/

2025-03-17 15:50:34 CET

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The only information we get is op-ed in by users. For example camera access (scan qrs), photos (add contact photo), filesystem(save tx list + download WireGuard config file). Outside of the basic things we collect no personal user information.

2025-03-17 15:47:27 CET

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None.

2025-03-17 13:57:34 CET

AND… We’re live on iOS TestFlight!
You can now download the Blitz Wallet beta on iOS TestFlight, Android Play Store, or via APK.
Download now:  iOS: https://testflight.apple.com/join/r8MfbNa6
  Android: https://play.google.com/store/apps/details?id=com.blitzwallet
  APK: https://github.com/BlitzWallet/BlitzWallet/releases/tag/Android-v0.4.2-beta

2025-03-16 14:09:15 CET

The new Blitz Wallet Version is Now Live on the Play Store!
You can now download it directly from Google Play: https://play.google.com/store/apps/details?id=com.blitzwallet
Try it out and let us know what you think! #BlitzWallet

2025-03-15 18:09:18 CET

New Blitz Wallet Beta Update!
Android users can download the APK on GitHub or Zapstore. iOS and Play Store versions will be available after approval.
Highlights
- eCash
- Point-of-Sale
- Performance
- Bug Fixes
Read the full release notes here:
https://blitz-wallet.com/pages/blog/power-up/
https://video.nostr.build/56191707054f865e149cfd33a770dd70f27d6b7bcfda3fc016acbe060789ae77.mp4
https://video.nostr.build/0f9c1a855bbbeedc7bcc0b6370b91061c85a3e92afa80d8ad0a3234da4a67a9d.mp4

2025-02-26 03:05:25 CET

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Damus

2025-02-26 01:47:49 CET

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I created the gist how do I add it to my profile?

2025-02-26 01:37:21 CET

Thanks, @npub1c85…6lkc for the tips on how to create a custom nip5 verification. I’m now verified by Blitz Wallet!

2025-02-26 01:33:33 CET

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Ok, I got the first one done. I should have the verification on my profile now.

2025-02-24 15:33:05 CET

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I didn’t know this was a thing. I’ll try and update things soon, thanks for the information.

2025-02-22 23:21:18 CET

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https://testflight.apple.com/join/r8MfbNa6. The new version 3.0.6 build #19 should be out soon.

2025-02-22 19:17:21 CET

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Yes. But, I need to get around to updating with a different wallet though.

2025-02-22 19:16:41 CET

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Thank you! It’s taken a lot of work but I love how it’s turned out.

2025-02-22 17:06:52 CET

I’ve been told I need to post here more so…
New Blitz Wallet Beta update!
Android users can download the APK on GitHub or zapstore. IOS and playstore will be available after they get approved.
- Faster load times
- Fiat Display Upgrade
- Performance Boost
- Bug fixes
Read more:
https://blitz-wallet.com/pages/blog/efficiency-update/

2025-02-22 04:23:08 CET

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Yep. Working on the other one now too. Thanks for the finds!

2025-02-21 20:00:22 CET

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Ya I know. About the zap store I’ll be uploading a new version soon so that will take care of the discrepancy.

2024-10-12 01:50:38 CEST

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Blitz only uses ecash as a way to interact with LN not as a way to send ecash back and forth.

2024-10-12 01:49:15 CEST

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You can only send out to an ln invoice

2024-10-12 01:12:30 CEST

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You receive 100 SATs you can't send 100 SATs out because of transaction fees. Try sending 50sats and see if that works.

2024-07-23 00:05:21 CEST

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Currently shaking

2024-07-23 00:04:39 CEST

Thank you so much OpenSats for selecting my project, Blitz Wallet, for funding!
No words can describe the feeling of a project you have been working tirelessly on for the last 7 months being recognized as something that has the potential to make an impact in the Bitcoin ecosystem.
Regardless of school, being a Resident Assistant in my dorm, my internship, or any other outside factors I’ve stayed dedicated to building my application because I believe it has the potential to change the world. And now, with OpenSats' generosity, that belief is starting to turn into a reality.
Nothing random happens in life, your choices create your outcomes. And, being awarded this grant proves just that. #note1t8x…9ww3

2024-07-19 18:50:06 CEST

Blitz Wallet has made its way into the Human Rights Foundation Financial Freedom Report!
One of my goals with Blitz is to make using Bitcoin easy. While there are many ways I have gone about doing that, the main way is by creating In-app integrations that you can easily pay for from your wallet.
In the report, they wrote about the SMS service integration which allows you to send and receive SMS messages anonymously for enhanced privacy. In the future email support will also be available.
Blitz Wallet also currently has a chatGPT integration which allows you to interact with chatGPT anonymously and more cheaply than the web version.
More integrations are to come, but it’s surreal seeing my work being featured alongside other ground breaking work in the space. https://image.nostr.build/ca043b97a138eeaa14fe1e0dc49998ed09466b069f4ee650b20de56812b2a0fc.jpg

2024-02-10 21:36:53 CET

Blitz Wallet Beta is live!!
Blitz Wallet, a self-custodial bitcoin lighting wallet that uses the Breez SDK, Greenlight, and Boltz API.
There are 95/100 spots left on IOS so if you want to test it click the link below.
https://blitz-wallet.com https://image.nostr.build/1c9525871808c62d9cc41d0be95e21278e8e41f9c4578af0a1c9e82696768b80.jpg

2023-12-09 17:22:07 CET

Receiving a bitcoin lighting payment to my custom bitcoin lighting wallet that I am creating called blitz wallet. https://video.nostr.build/624461adb0787ff9dae6884e90308f76b44fe1f4ee15b7f414caf37534bd8917.mp4

2023-09-13 20:38:51 CEST

Did someone say PAYMENTS. I now have a fully functional base chain non custodial wallet! https://video.nostr.build/af3476e66edd096795dcce9a8f37a6588a8eac406b513757d8d91673fa3c0fd0.mov

2023-09-09 17:53:47 CEST

If you want to create a wallet you need to be able to accept some transactions. WOOOO. https://video.nostr.build/27fb81dfc62ca25ddc669fc25d25155330351c05d3c0ed1f66b18335cdfb8659.mov

2023-09-07 16:25:15 CEST

Let’s generate some bitcoin addresses! https://video.nostr.build/9094c1d5612056d6c31ccf4faec67923a161855c4b1734ce0e163ef632fb7682.mov

2023-09-06 16:12:47 CEST

Thank you Muun Wallet for the UI inspiration. You can now scan, paste, or get information from a QR code.
You can also see the full Bitcoin address at each stage.
And give custom transaction fee along with suggested fees given current mempool. https://video.nostr.build/48609b172c821c621a48920f70e6bcf8db85c2f58aca285c8adf03e47a587019.mov

2023-09-05 19:23:06 CEST

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Woah. Welp i guess I’m not different:(

2023-09-05 18:05:58 CEST

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Did they really? What does it look like.

2023-09-05 17:25:16 CEST

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Will do!

2023-09-05 16:55:20 CEST

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Ya it’s a npm library. It defaults to 128 bits of entropy using the crypto.randomBytes library.

2023-09-05 16:53:58 CEST

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The colors are arbitrary. The goal was to have a distinct difference between each balance.

2023-09-05 16:53:03 CEST

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Hmm. Any chance you could send a picture of what you mean?

2023-09-05 16:52:04 CEST

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The goal was to be different!

2023-09-05 16:13:25 CEST

Decided that I wanted to show both sats and btc in the same UI. How does it look? https://video.nostr.build/d4eda84d39bcf9691b1d6e7852cae648b1ba7e0104c0a27c00a3c5eea8695295.mov

2023-09-05 16:11:01 CEST

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For the mnemonic seed phase I used bip39. To derive address and payments I’m going to use bitcoinjs-lib.

2023-09-04 17:59:29 CEST

Currently building a #Bitcoin wallet.
So far have a mnemonic seed phrase + validation and PIN for wallet login.
I’m using this to learn React-Native. If anyone knows anyone for an internship in front-end web development/ react / react-native let me know. https://nostr.build/av/0c645cccdb5755163c68b624dfadbe7d08b2b514c721d14c067fde9de4fd4972.mov

2023-07-16 15:55:29 CEST

There is something fascinating about natural forces but also something deeply human about wanting to control the uncontrollable. Yet the most beautiful processes are those that humans have yet to touch.

2023-04-14 14:55:33 CEST

Can someone explain to me the thesis behind Bch. Doesn’t large blocks kills the transaction reward. Meaning their solution is actually creating a problem?

2023-04-03 18:44:54 CEST

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Full website isn’t done yet, just want to see if the strike lightning integration for the forum is working.

2023-04-03 18:43:57 CEST

Hey all. I’m trying to develop a bitcoin education website to make onboarding easier for no-coiners. Just finished the forum page and wanted to see if y’all would test it out. I’m using micropayments over the Lightning network to hopefully prevent against bot spams. A post is 15c, comment is 10c and a comment on a comment is 5c.
http://bitlearn.epizy.com/index.html

2023-03-08 01:34:52 CET

Just sent my brother 5,000 sats 1,100 miles away to bet on black just for it to lose.

2023-03-06 17:33:05 CET

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That post doesn’t have a zap button :(

2023-03-06 16:46:44 CET

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Ahh so it just pulls it up. Cool!

2023-03-06 16:46:23 CET

What happens if you post a twitter link here?
https://twitter.com/blakekaufman17/status/1632441514793082882?s=46&t=TG6Ng8vR2oc9XIX-onE-Nw

2023-03-06 03:56:27 CET

THE PRESIDENT OF EL SALVADOR RETWEETED MY TWEET. MY LIFE IS COMPLETE

2023-03-04 14:23:48 CET

Events are truths. Interpretations are imaginary. Therefore in order to live in reality you must live through experiences.

2023-03-04 13:18:30 CET

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No spelling mistakes and it made sense that’s really impressive.

2023-03-03 22:34:49 CET

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Most canned food.

2023-03-03 20:02:56 CET

The best thing about coming home from college is eating real eggs.

2023-03-03 16:12:37 CET

Time is distorted in dream state making 5 minutes feel like hours. I wonder if before you die what we call “heaven” is your brain replaying all the good memories making death feel like eternity, but in reality it’s only 7 minutes?

2023-03-02 21:47:35 CET

People be like “well I can Venmo my friends why use bitcoin”. Zaps. Zaps is why.

2023-03-02 20:51:58 CET

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You hate to see this

2023-03-02 04:54:42 CET

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Truth be told there is nothing better than hearing a miner running. No offense.

2023-03-02 04:25:26 CET

The power of the bitcoin community
https://nostr.build/i/nostr.build_afc8e34295b57b548a607439f74ce674350ad0e94fb2c90daea9a7878ca3fad5.jpeg

2023-03-02 02:28:25 CET

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My exact face.

2023-03-02 02:25:13 CET

I just logged onto twitter, saw a video of a half naked man dancing in front of kids, and closed the app. This is why I nostr.

2023-03-01 15:29:38 CET

Hope, a feeling that conquerors all. Leaving you: begging for more, unsatisfied, yearning for tomorrow to come sooner.
Fiat makes hope scarce, bitcoin makes hope abundant.

2023-03-01 03:21:24 CET

So if someone doesn’t have a zap icon does that mean they haven’t set it up yet?