kalle

Author of Grokking Bitcoin and Bitcoin Development Philosophy

Public Key

npub1g9ym6t98cz9tvvsac865zak83txjjhd2yqcdegzwsqg2mxfww9xs8fy05t

NIP-57 Address

zapkalle@lnbits.rosenbaum.se

Profile Code

nprofile1qqsyzjda9jnupz4kxgwura2pwmrc4nfftk4zqvxu5p8gqy9dnyh8zngpz4mhxue69uhkummnw3ezummcw3ezuer9wchsz9thwden5te0wfjkccte9ehx7um5wghxyee0dm3q0t

Publishing to

nostr.oxtr.dev

relay.nostr.bg

Author Public Key

npub1g9ym6t98cz9tvvsac865zak83txjjhd2yqcdegzwsqg2mxfww9xs8fy05t

Show more details

Last Notes

2025-03-16 18:56:28

What bip39-compatible onchain wallets for iphone would you recommend?
Asking for a friend

2025-02-26 14:30:17

Japp, missa inte detta sköna årliga event.
Bitcoinsymposium 2025, 15-16 mars.
#nevent1q…k06x

2025-02-19 08:21:50

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Mine Sweeper is one of the best games ever. I got pretty skilled at it too. Microsoft is not all bad. Certainly not back in the win 3.11 days.

2025-02-19 06:55:39

GM. Whipcream and orange for breakfast today. https://image.nostr.build/020ffafb8aba4d203392137957f9d09601db9ed49ec2ad995424c32ea5d3f5f4.jpg

2025-02-16 06:20:05

I stand corrected! My note was based on old experiences, not new research.
Seema most wallets offer to hide the balance nowadays.
Thanks everyone for your responses.
#nevent1q…ma27

2025-02-15 13:43:50

Most Bitcoin wallets suffer from the same design flaw: Showning the balance in big fat digits on the main screen.
Blur it, hide it behind a button, or whatever. Just don't write it right onto everyone's face.
What wallets can hide it? I know @npub1xnf…lpr5 can.

2025-02-02 21:20:37

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Ehm, maybe it's @nprofile…54gu I should ping instead of @nprofile…4ph5?

2025-01-17 16:21:38

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This got me thinking of a prank, where you send many small fiat amounts to someone you love and make each message one row of ascii art dick. Dick picks over bank statements.

2025-01-12 16:01:22

Spectacular moon this night. GN. https://image.nostr.build/b8c26a417498d81db782ea9803a76e822810dca93181c3bd25ac896665bf74b0.jpg

2024-12-15 15:48:40

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I'm on zapstore 0.1.8

2024-12-15 15:47:37

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Thanks for the hints. I got it working again. However...
I uninstalled Fountain, which was installed though another app store, and then went back to zapstore, searched for "fountain" and got hit by this message: https://image.nostr.build/bfb0146965218f7d9cbfccc0f769faed271b52ac3011ef11dbfde523c08414c7.jpg
This looks like a pretty bad error. What do I do?

2024-12-14 19:38:00

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Oh, a force stop allowed me to see stuff normally again, but now I'm back to the never ending spinner on the install button. https://image.nostr.build/22f7b3aeeb15fadba0effeb18e28134704f11762333fd82ea83ad2d2d7303415.jpg

2024-12-14 19:34:28

@npub10r8…t2p8 I upgraded 0.1.5 -> 0.1.7 and I had issues with never ending spinner on buttons so couldn't install/update apps. I deleted cache, but nothing changed. Then I deleted all app data and restarted the app. Now I see nothing but the spinner for 20 minutes or so. What can I do to get out of my misery? https://image.nostr.build/1e3b30a77461c93f3d6e13e85ff0390c0dc9022d63c914dd94f1f7f3dee45ee5.jpg

2024-11-08 21:27:51

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Thanks! Likewise, I had a great night!

2024-11-06 14:40:31

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Hey! Nice to meet you yesterday. Let's catch up at nostrville tonight.

2024-10-15 16:59:22

This chicken was massive. 3 kg https://image.nostr.build/e61aa3f71ccb2674610c6e18b50c2b3b9a687a317e7d4c995581c09251d97405.jpg

2024-10-14 16:25:27

Thanks @nprofile…nevq! Nostr needs more price talk. My take: the 100 year candle will be green! Very green..
#nevent1q…hz3f

2024-10-13 17:43:34

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Ping me here when you request to create a new translation, I'm not being notified by transifex.
Review is tough. Either we yolo and just merge it, or we find some volunteer to review.

2024-10-13 17:32:37

Most underrated german translation of Grokking Bitcoin so far. Thank you @nprofile…qw6w
#nevent1q…36gl
#nevent1q…36gl

2024-10-13 17:23:13

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Super happy to hear this, thanks. I hope you can use it for future courses.
The open source book is available in readable form (not just the asciidoctor source code) at https://rosenbaum.se/book

2024-09-21 05:00:22

Hey @nprofile…qss4, why does this lightning address of yours (fruordf@getalby.com) have min sendable 1000 msat and max sendable 0 msat? https://image.nostr.build/3ba3a970bbffb9567c468df7e5a1e03c432b2591d57056a41d3e70cb44d57a7f.jpg

2024-09-11 10:41:37

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That song is disqualified because it contradicts my statement.
Nice song though

2024-09-11 10:24:04

All songs with yodeling in it is about yodeling.

2024-09-09 05:04:53

Check out kalle's personality analysis! https://nostr-personality.vercel.app/npub1g9ym6t98cz9tvvsac865zak83txjjhd2yqcdegzwsqg2mxfww9xs8fy05t

2024-09-08 09:55:46

Anything cool going on in Nashville in November? Thinking of spending a month there.
#county🎻🪕+ #bitcoin
@nprofile…y6a7 @nprofile…vd2m

2024-09-07 19:55:58

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Why would porn be an exception in Canada?

2024-09-04 18:53:57

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CLN - LNbits/lndhub - zeus

2024-09-04 17:13:35

Damn!
Double-zapped *again*.
I clicked the zap button, selected the amount and then zeus opened showing the invoice. I hit the big button, then it "fails" after 1m, but under the hood my node keeps trying. I was fooled by this and tried to zap again which also "failed". This resulted in two zaps.
The issue seems to be that zeus displays the payment as failed, but it's not.

2024-09-04 16:48:11

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Thanks Jameson!
Beem thinking the same. What's clicked for me in your article is the info asymmetry. They probably studied you thoroughly.
Also interesting with the legal issues of escalation.
Regarding geographically distributed keys, it's hard to convince the attacker that that's the case. But that's out of scope for your article.

2024-09-04 08:16:31

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This might somewhat answer my question: https://x.com/0xPolygon/status/1829920734379917693
So I guess it's noonish GMT. https://image.nostr.build/af3fc019db5bae5104f9bb07867fca29941ba16e57a7c75f81c7b66fc4453bd1.png

2024-09-03 12:39:27

Apparently there's a polygon "upgrade" coming. But I can't find any information on when the upgrade is happening. All I know is that it's going to happen on "Sept 4". That's a timespan of 48 hours in which it could happen.
https://polygon.technology/blog/save-the-date-matic-pol-migration-coming-september-4th-everything-you-need-to-know

2024-09-01 14:11:39

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Thanks for this! nostr-scripts really helped me. It also had me discover the great nostr army knife by @npub180c…h6w6 : https://github.com/fiatjaf/nak

2024-08-28 05:12:12

And I thought I was a nerd...
#nevent1q…ncep

2024-08-28 05:03:13

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Inject your mom if you want inject!

2024-08-27 18:08:59

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Ok, I too enabled nip42 (though a finite monetary supply for bitcoin is nice too, and it's already enabled on my bitcoin node). I think I've done it exactly like you. Maybe your relay was already a well-known one while mine wasn't? Not sure how it selects relays for publishing.

2024-08-27 18:02:31

test

2024-08-27 17:43:48

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I'm trying to do the same thing, but nostrsync doesn't republish to my relay, only to some well-known ones. Did you somehow import the downloaded js file into the relay through command line or something?

2024-08-27 09:15:41

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Thanks for the recommendation. It seems to support a whitelist. From sample config\.toml:
```
[authorization]
# Pubkey addresses in this array are whitelisted for event publishing.
# Only valid events by these authors will be accepted, if the variable
# is set.
#pubkey_whitelist = [
# "35d26e4690cbe1a898af61cc3515661eb5fa763b57bd0b42e45099c8b32fd50f",
# "887645fef0ce0c3c1218d2f5d8e6132a19304cdc57cd20281d082f38cfea0072",
#]
# Enable NIP-42 authentication
#nip42_auth = false
# Send DMs (kind 4 and 44) and gift wraps (kind 1059) only to their authenticated recipients
#nip42_dms = false
```

2024-08-22 13:13:46

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#nevent1q…6e5p
Ok

2024-08-22 13:02:33

Wtf is this? That was sudden. https://image.nostr.build/53d414c20876eba43928ca9ae4e1119296febc53271456613e1167ba7140fbd2.jpg

2024-08-21 15:29:20

Hit me with your best 60s-80s country songs 🎻. I promise to listen to every suggestion. If I haven't heard it before and if I manage to listen to the full song I'll zap you.
If your suggestion sucks I'll let you know.
Me like legends like David Allan Coe, Merle Haggard, Emmylou, George Jones, Willie, Dolly, Waylon. The sadder 😭, the better.
https://nostrcheck.me/media/4149bd2ca7c08ab6321dc1f54176c78acd295daa2030dca04e8010ad992e714d/5b5f4ae4731fa9064ce8e519ae09ec351ffba593a1faa30f61a001d5e76bb359.webp

2024-08-17 11:05:26

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Apparently nostr > lightning > bitcoind > linux

2024-08-14 07:42:15

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Damn! The client displays the name of the npub/nprofile. But you get the picture.
How do I escape these things. Backtick?
`npub1s6z7hmmx2vud66f3utxd70qem8cwtggx0jgc7gh8pqwz2k8cltuqrdwk4c`
vs
`nprofile1qqsgdp0taan9xwxadyc79nxl8svanu895yr8eyv0ytnss8p9tru047qgckrxq`

2024-08-14 07:37:24

Very annoying that different nostr clients show different formats of the user id.
Amethyst: @nprofile…pc5d
Snort: @nprofile…pc5d
The question "am I looking at the same dude?" becomes hard to answer.
Wtf is an nprofile anyway? Seems to be the pubkey (8685ebef665338dd6931e2ccdf3c19d9f0e5a1067c918f22e7081c2558f8faf8) with a 0020 prefix. Is this some weird segwit v0 witness program wannabe format?

2024-08-13 10:57:33

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That's next-level evil

2024-08-13 10:51:56

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Yes, and no fucking beeps.

2024-08-10 08:55:57

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Good reminder!
Though I'm unsure about controlling one's feelings. But you can control how you act upon them.

2024-08-06 12:23:57

Gift from my dear friend @nprofile…t5a6 https://image.nostr.build/9d092cc9c86ed9dd717198bd7600bbdb46606b2820c6bd47f8a7224fc050bfb4.jpg

2024-08-04 11:38:38

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Nah, who paid you to say this?

2024-07-23 07:25:05

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I knew it! He's always been. https://image.nostr.build/a478c161548b3466f335def57c7e20958ebc41af152119783688c6d9fd73343e.jpg

2024-07-20 20:10:03

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288 kB https://image.nostr.build/a8ed08d715d70df6f893048f7bb1586357d200863b8792a231ccb4845ad37cce.jpg

2024-07-20 10:12:29

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We're friends, right? Happy to see you here!

2024-07-15 15:33:10

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Oh, and great post, thanks!

2024-07-15 15:31:30

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It's also disturbing that AntPool mines an*empty* block on top of their own block for 30 seconds. Why? Because assembling a template takes time? Then, why not mine an empty block for just the time it takes to assemble it?

2024-07-08 09:53:31

Thank you too, mysterious giver of sats!
Received by my Bitcoin Core + Core Lightning + lnbits stack running on a crappy server in my basement.
I, and everyone else, have no idea who sent it and what it's for. But I guess I must have done something good.
This is beautiful.
https://image.nostr.build/9cc7317ce3d0195d48a214ff4c31f40828dc6e8009dd637ca1b2365b657216ab.jpg

2024-06-20 09:06:12

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Thanks Lyn. Concise as always. 0 shits given.

2024-06-06 10:04:05

Bitcoin Development Philosophy is out!
https://void.cat/d/UFY6uC1zMfESmaPpegfkAp.webp
This book is built around a set of quotes from seasoned Bitcoin devs, organized into topics such as Decentralization, Upgrades, Open Source, Scaling, and my favorite, When Shit Hits The Fan.
Try: https://bitcoindevphilosophy.com/
Then buy: https://bitcoinbook.shop/products/bitcoin-development-philosophy?Format=Paperback

2024-05-31 07:55:11

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https://image.nostr.build/47bec5e3e19e4471c68cd3aa28e66768118a41b192b7420ad6ceb7ad8ceed380.jpg

2024-05-25 16:08:12

Neighbors asked if we wanted some of their catch. Hell yeah! https://image.nostr.build/023ea7c378a0cc3acf10c215927fa659a966bfead83c82e5ebbc1b04853441fc.jpg

2024-05-21 15:17:00

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It took 70 minutes. That's impressive.

2024-05-21 15:12:16

67 minutes and counting https://image.nostr.build/abddb5bd1f5cb28d3753b3c2b1dd0eefe69f1d408459097beec3d2ffa8e361bf.jpg

2024-05-06 06:22:02

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I replaced mine wirh a proper x86 machine. Everything is soo easy and smooth now.
Well, except all the problems of course...

2024-05-04 13:24:20

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Sauce?

2024-04-30 21:34:50

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Wtf!? How big is your laptop screen? 32" foldable?

2024-04-29 14:10:45

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If they would advertise it, they would also let people know that there currently is no real privacy, which might get people working harder on privacy methods/tools. Maybe it's a stretch, but not totally implausible.

2024-04-29 06:47:37

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Agree, but do we really know that Satoshi's identity was strong against powerful attackers?
He could be known by some government without him knowing it.
He could also already be locked in a cage somewhere, or worse, without us knowing about it.

2024-04-14 07:19:52

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Thank you!

2024-04-14 06:44:14

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Cool, but wtf is "six lessons of the Austrian economic school"? Searching the interwebs shows nothing but the above quote. Any pointers?

2024-04-08 06:37:18

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Yep, the reason being PBKDF2 explained here: https://rosenbaum.se/book/grokking-bitcoin-4.html#fig0416

2024-04-06 19:23:44

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I drive a Saab from 2005.

2024-03-17 12:01:21

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Seems my "funny" comment gave a bitter aftertaste. Sorry.

2024-03-15 13:50:21

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@npub1jt9…la9y is that you? You've aged 20 years in 5. How can I help?

2024-03-15 13:47:33

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Thanks for elaborating! Yeah, the number of signatures explodes quickly but for most common use case (2-of-3) it makes sense.

2024-03-15 10:44:04

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Ok, understood! Thanks for reply.
So after you've plugged in the first signer, you could for a k-of-t setup try each possible set of k signers and for each set that includes the plugged in signer, you show the possible cosigners. Is that what you're suggesting?
Couldn't you instead just sign all possible sets with the first plugged-in device, then plug in the next and filter out the sets of k signers further, and so on until there's only one such set left after the last device is plugged in? Is there danger in signing frivolously like this? They all sign the same message (i.e. a bitcoin input), right?

2024-03-15 07:35:50

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@npub1j8d…26k2 This looks amazing. But why do you have to select which two signers to sign with at 1:34 in the clip? On the next screen, the app seems to automatically identify which of the two devices you plugged in.

2024-03-14 21:11:09

Never heard of Frostsnap! Amazing and beautiful idea for setup of FROST threshold signatures. https://frostsnap.com/demo.mp4 https://frostsnap.com

2024-03-07 17:08:32

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Yeah , given that AAA is the best rating there is to buy, they should've stayed in business longer. Can't trust these ratings. I smell corruption.

2024-01-18 07:19:31

@npub18d4…6lt3 @npub1hvw…5e8q On my mempool dot space account it says "You are currently on the waitlist. You will get notified once you are granted access." What does that mean? What's there to wait for? How long does that usually take?

2024-01-04 09:33:41

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And there's risk that people who manage to stay out of surveillance become auto-suspects. "Why are you hiding? Papieren bitte!"

2024-01-03 16:47:09

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#metoo :(

2023-12-22 06:41:47

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Yes!
I featured your test in Bitcoin Development Philosophy in the section about "inward scaling":
https://bitcoindevphilosophy.com/#_inward_scaling

2023-12-21 22:23:58

Elvis and the kernel
Few...
https://image.nostr.build/66b059da216d069c1554612e106ec6d42ff2eb3424f5ebaad45cca19119ab146.jpg

2023-12-12 07:35:22

Bitcoin is not the best thing that has happened to humanity in 100 years.
-regtest is.

2023-12-04 21:39:06

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Yes

2023-12-04 12:14:07

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Ok, got it. I don't run any fullrbf preferential node, so not much use to point to any of my nodes. Thanks for helping bootstrap this.

2023-12-02 20:03:27

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$ bcli getaddednodeinfo
[
{
"addednode": "full-rbf1.btc.petertodd.net",
"connected": false,
"addresses": [
]
},
{
"addednode": "full-rbf2.btc.petertodd.net",
"connected": true,
"addresses": [
{
"address": "195.189.226.74:8333",
"connected": "outbound"
}
]
},
{
"addednode": "full-rbf3.btc.petertodd.net",
"connected": true,
"addresses": [
{
"address": "91.231.182.136:8333",
"connected": "outbound"
}
]
},
{
"addednode": "full-rbf4.btc.petertodd.net",
"connected": false,
"addresses": [
]
}
]

2023-12-02 19:58:03

@npub1ej4…ndrm Did you deliberately take down full-rbf1.btc.petertodd.net and full-rbf4.btc.petertodd.net?
```
2023-12-02T19:40:14Z connect() to 217.199.103.141:8333 failed after wait: No route to host (113)
2023-12-02T19:41:14Z connect() to 185.254.198.243:8333 failed after wait: Connection refused (111)
```
4 was gone before my log rotation, and 1 disappeared on Nov 14.
Should I delete them from my conf? What about 2 and 3?

2023-12-01 16:48:24

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Looks very much like the output of Core Lightning cli when used with flag -F:
```
$ lightning-cli -F listchannels |head
channels[0].source=02e4ebfc64bf742e100f7ed1f4f9c4f3ce03109face9cf5eab58529bd3a5fc6ce9
channels[0].destination=02ff30e83896d453cfc89ff4dd06d23d793b7246f154c210324adc1d42c849ce74
channels[0].short_channel_id=771657x2489x1
channels[0].direction=0
channels[0].public=true
channels[0].amount_msat=3000000000
channels[0].message_flags=1
channels[0].channel_flags=2
channels[0].active=false
channels[0].last_update=1701194704
```
Very useful

2023-11-28 12:27:37

The smallest of fixes, but still a contribution...
#nevent1q…yf2v

2023-10-27 15:06:06

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Ah, ok. Didn't think of that. Good point.

2023-10-27 06:00:50

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Oh, sorry, I didn't mean it'd reach 21M, just that the last row IS 100%.

2023-10-26 20:33:37

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Looks much nicer to me! But now I see that the percentage isn't 100% on the last row. I guess it should?

2023-10-25 19:21:04

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You're welcome

2023-10-25 17:37:45

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You still need any? I have to spare.

2023-10-25 10:14:03

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It's cool! I think you should shift "supply" and "percent" columns down by one and put 0's on the top row. It'd make it more intuitive (for me at least).
But then you'd need another row at the bottom (epoch 34, year 2140) and put 0 for reward.

2023-10-22 17:31:34

My first PR on lnbits!!!! Also my first PR in python!!! What can go wrong @npub12rv…85vg @npub1a8j…5pj4 @npub1rj2…ag4u?
https://github.com/lnbits/lnbits/pull/2056

2023-10-21 11:51:14

Test

2023-10-09 21:07:43

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There is no such capability in amethyst, right? Of course you can copy the npub and create an account with it, but a Malkovich button gives you a very easy way to do it. Just to temporarily transcend into someone else's persona.

2023-10-08 20:13:45

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A "Being John Malkovich" button that lets you view nostr as that user.

2023-09-30 13:18:19

I think this is a great question that we don't have answers to, which show in the comments.
I think we'll be using custodial solutions with a high degree of auditability. When I want access to my funds they'll give me a lightning channel that they create from a channel factory (handwaving). Of course they'll offer me on-chain too, but I won't afford to use it
So kill me.
#nevent1q…axxc