I use art and crafts to teach people how to use Bitcoin: a peer-to-peer electronic cash system online and in the real world.
Public Key
npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Profile Code
nprofile1qqsd73u9dpremcntf2pur0wymw4krdwvsts6xyhzk29us9dp9223uecpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsvu26r6
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Published at
2026-07-21T23:43:04+02:00 Event JSON
{
"id": "1c1580e6def0ba848e528fa8fb228115e32d79554bb6b170a81f907ef0e37e57" ,
"pubkey": "df478568479de26b4a83c1bdc4dbab61b5cc82e1a312e2b28bc815a12a951e67" ,
"created_at": 1784670184 ,
"kind": 0 ,
"tags": [
[
"client",
"Primal Android"
]
],
"content": "{\"name\":\"Marc\",\"nip05\":\"[email protected] \",\"about\":\"I use art and crafts to teach people how to use Bitcoin: a peer-to-peer electronic cash system online and in the real world.\",\"lud16\":\"[email protected] \",\"display_name\":\"Marc\",\"picture\":\"https://blossom.primal.net/46bf513e877464299ce3cdfaa93a8f23891a108d5694b78f01a13e599aded0a8.jpg\",\"banner\":\"https://blossom.primal.net/bf3993f2a88304aeb77fcd1dcc7fbbedcfe24a8e3a087aef763a2686ba98b25f.png\",\"website\":\"https://tinyurl.com/marcnostrlinks\"}" ,
"sig": "bbb52cce7f813e3df24e7a9feea205f920f2c6a16f721ef10138cb8d16f48183a33f0ad43d63973924aedb9ce43dcd5cb7425b656fbc14c5832f90e1d0d08ebe"
}
Last Notes npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc This week feels like a Terminator style shitshow. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc A Lotta stuff seems sus' in retrospect. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Awesome. Ice never heard of nostr compass. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc What pod? npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I bought a pair of $500 boots because I got tired of paying a hundred bucks to replace sneakers every month. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Multisig and multiple sources of entropy(true randomness) is diversification in cyber security. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc We verify the report, but they are still working on the report. 🫂 npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Me too. Many people have called me paranoid over the years. I don't think I am paranoid. I like to prepare for the worst case scenario and hope for the best. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc My wife says this every w. 🤣 npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Awesome. Thanks. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Thank you. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc On the list, but Im kind of busy. I'm not too worried because rolling dice and checking the math is my happy place, but I just can't trust a certain supply chain anymore. 😢 npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Good morning. This situation is a hard pill to swallow. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc That's what I think, but I use poker math and look at it like +EV. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Someone told me you can make doxe float with salt. I tried it, but it didn't work. Is there a certain type of die I need, more salt, Epson salt? npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Thank you. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Thanks. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Whats the source, if I may ask? I started writing an article about digital signatures a couple weeks ago. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Thanks. I've been getting a lot of this. People practically argue you should keep your 15 dice roll MK3 instead of use use 100 shitty dice rolls. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Has anyone read any books on dice entropy? I want to learn more about generating sufficient entropy for digital signatures using 100+ dice tolls. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc This advice is suitable for Edward Snowden. It's fucking retarded for bitcojners who do not learn about entropy. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc You're right. I just posted on Instagram for the first time in years. Thanks for sharing. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Coins are good for making entropy though. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc We did not emphasize "don't trust" enough. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc This is an emergency situation. Game theory optimal self-custody takes time to learn. If your funds are at risk, you don't have time to learn in an emergency. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Right. So if you can't do it, you should not own Bitcoin. The exchange is a better option for those people. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc It's all trade offs. If being your own bank means you lose your stack, you should probably use a bank. Is it ideal, no? Is it better than risking your stack? Yes, unless you think the risk 6102 is eminent. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Welcome back! npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc It's suspicious. I'm not pointing fingers, because I don't know, but it makes my spidey senses tingle. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Of course. I was just testing it out. It's not a real wallet. 😊 npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I saw this earlier today and couldn't go back to sleep, but this is important work. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Your argument is valid though. I almost lost my stack because of a typo, but I was able to recover it. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc The thing is I used to recommend the Cold Card because the BIP39 words were pre-spelled to mitigate this risk, but I assumed everyone rolled 100 dice rolls. That's obviously not an option anymore. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc It's possible.. it's been on the back of my mind, but it's too early to tell. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc What? npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I know. You're not wrong. You also created a way to record seed phrases using a deck of cards. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I tried entering a 64 character hash in Blue Wallet yesterday and it worked. It's obviously not air gapped, but I don't plan on using the wallet anyway. A hash of a large file nobody has ever seen shouldl produce 256 bits of entropy. This obviously does not apply if the file you hash is Romeo and Juliette. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc You can use tools like this. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Yes, but that is a conversation for another day. Today, 40 bits of entropy can and will be hacked. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc SmallErodeProtectUsePunchFiigureBeyondImproveCementSpiceDemisemiseDirt npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I am not persuaded by ad hominem attacks. The main problem with coinkite is the company demonstrated it is the weakest link in the supply chain. We cannot trust our life's savings with that supply chain. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I've been trying to write a book about self-custody for a few years. The talk of super advanced high level attacks like inventing a quantum computer are sexy, and the ad-infinitum individual wallet tutorials are easy to get ad revenue. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Then it should have never had an RNG. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I've thought about this more. I once heard a podcast where someone said they lost their stack because they didn't actually roll dice and just fat-fingered fake rolls into a cold card. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc In fact I'm shocked that so many people trusted and did not verify. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I agree with you. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Don't trust brands. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Vivaldi is great. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I had no idea this existed, but it's good to know. I know a lot of people don't trust NIST for various reasons, but that seems silly in retrospect. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc It's a great device if you have toothpick counting level autism.(People like me) npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc You could lose 2 keys, but I mean I make too many typos for a password. If you don't believe me or don't get it, check out all the misspelled words I have on nostr. ☺️ npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Holy shit. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc What do you mean by if? npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc An actual retirement attack? npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I'm too afraid I'll mess one up. I've made mistakes before. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I forgot all about that guy. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I would only use a 2-of-2 with miniscript. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc It's possible, but there's no way to know. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Thanks. Good ro know. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc This turned out to be good advice, but I'm not sure dice alone is good enough anymore. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Part of the problem, but not the whole problem. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc NVK published an article on the raspi vulnerabilities a couple weeks ago. Those arguments are still valid, but moot when compared to bad entropy. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Heartbreaking. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Jeez. I tried bitkey with a small amount, but I couldn't load the wallet in another device and decided against using it because of this. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Agreed. 12 BIP39 words minimum and that entropy should be generated differently than your seed, eg. Coin flips instead of dice rolls. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Tap signer and Satacard are apparently unaffected according to this vibe coded website, but I have not verified this yet. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Oh I'm not using hex dice to generate keys. That's a good point. My plan is to use them as a visual way to describe Bitcoin mining. I forgot to mention that. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Fair. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I've been working on a book about self custody, but I don't intend to recommend any hardware wallets. I am going to show different ways of generating entropy without an RNG. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I used to feel the same, but this situation changed my mind. People who push the easy button are better off letting an insurance company generate their keys. There's a privacy risk, but that's better than the risk of low entropy. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Step down as CEO. I mean this is like a hack from a dystopian novel. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc 😳 npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc The motto is don't trust verify. I thought everyone used tails to test this stuff. I guess not. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc That's awesome. I had the same idea, but a pull request for that is above my pay grade. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc @nprofile…u02p mentioned adding entropy before letting people push the RNG button. I think that's the right way to look at it, a UX issue. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I've been trying to write a guide to mitigate this risk for years. I'm still working on it, but it's hard as fuck to explain it to a general audience. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Thank you for posting. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc The thing that annoys me about Twitter is the algorithms nudge people into talking about AI breaking quantum cryptography, but they don't promote tweets about entropy. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc That makes sense. Back in the day Andreas called Bitcoin programmable money so I've always looked at it as such. I think the CBDC's changed the narrative. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc There is nothing wrong with programming your own Bitcoin (eg. time locks). npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Bitcoin is programmable money. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Imagine trusting the government more than math. Silly, I know, but most people trust the government more than math. The same logic applies to Google. I tried showing my brother in law Cashu. Be said I needed to make it work with the Cash App. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I understand, but suspect most people trust google more than the wierd autistic Bitcoin/nostr hackers. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc 😂 npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Screenshots of text annoy me, especially when it's something I would rather copy and paste like an address or something. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc This one time, my aunt told me she sent me an email. I couldn't find it in my inbox or spam folder. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Sweet! npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Stable coins are clearly digital slavery beads backed by national debt. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I'm not gay, but I've studied history. Historically speaking, this is a bad idea. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc https://npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0.blossom.band/52acfa3dfdfb82a2237300d1c498076d14c63f62935b22f0009daede5456a01c.jpg npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Lol. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I like Divine because it's not just ride or die freaks. Does that count as other stuff? npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I'm thinking about making this my new profile pic. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc This looks interesting. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc I have about $525 in USD reserves. 😂 npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Buy a cheeseburger with sats npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Steak N Shake looks like the change in the world I want to see. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc True. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc This is a good one. npub1marc26z8nh3xkj5rcx7ufkatvx6ueqhp5vfw9v5teq26z254renshtf3g0 Marc Fun times.
