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GitHub - karpathy/cryptos: Pure Python from-scratch zero-dependency implementation of Bitcoin for educational purposes

Pure Python from-scratch zero-dependency implementation of Bitcoin for educational purposes - karpathy/cryptos

which is an educational implementation of Bitcoin (ish) from scratch in Python, similar to @jimmysong ‘s awesome book “Programming Bitcoin”

You should do a “fire drill” on your self-custodied bitcoin about once a year IMO Check you still have your backups Check you haven’t forgotten your HWW PIN or passphrase (especially if you’re just stacking, never spending) Check you can actually restore backups (a bit expensive as you need a spare HWW to wipe and restore onto, but definitely worth it if you have 1BTC+) View quoted note →

Never ever put HWW seed words or backup or anything that should be a secret anywhere but a new hardware wallet 🎣 Good phishing attacks ALWAYS try to use fear and panic to make you act before thinking If in doubt, migrate to a new seed on a new and secure hardware wallet View quoted note →

My current stance on #BIP300 and #BIP301 for #Drivechains is that I’m not convinced this is the “best way” to achieve “blind” escrow and Blond-Merge-Mining. I don’t really care if people want to run drivechains; Bitcoin is freedom money so they probably should be able to, even if I and others think it’s dumb. But it should probably be a net-gain for Bitcoin and have more uses than one We only have so many NOPs left to soft-fork with, every new thing needing it’s own specific soft-fork isn’t sustainable CISC vs RISC We can’t really anticipate all possible transaction types and have templates for them all, which is why Bitcoin script exists, to provide powerful composable primitives that enable as many different uses as possible

Rust is a good language, seems to me it’s biggest problem is its foundation runs almost exactly like a shitcoin foundation without the token If Rust can become like C and basically get one minor update a decade and no-one seems to know who if anyone is ‘running’ the project, that’ll be bullish af

What’s the difference between data science and software engineering? Here’s one definition: data-science code is made worse by being general/modular, software-eng is made better Data sci is ad-hoc, often throwaway, so lends itself to tools like Jupyter notebooks really well. Trying to do data sci like software-eng is painful to watch 😂

Why is it specifically Cafés that don’t want to take cash? (UK/London anecdata, YMMV)

Classic moronic EU nannying Ossification by overregulation - how is anyone supposed to develop new, better protocols if they are forced to interop with the old? Why should I degrade the security of my platform just so someone else’s spyware can natively communicate with my users? We’ll be stuck with USB-C on phones for the next two hundred years for the same reason. View quoted note →

I’ve not caught up on the #Bitcoin dev mailing list recently, though seems I’ve not missed that much – still arguing about Inscriptions and mempool Full RBF 😂 Can we just get over it?! Inscriptions = legit use can’t and won’t censor; full RBF = incentive compatible, should be enabled.

A response to the Bank of England’s consultation papers on a #CBDC for the United Kingdom, the “Digital Pound”.

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The Digital Pound: A new form of money for households and businesses?

Introduction ⇝ Physical cash in the form of banknotes and coinage is a bearer instrument. A bearer instrument is a document that entitles whom...

It’s long 😅, so here’s the gist: an #ecash CBDC that’s private and anonymous would actually be worth developing, and have a bunch of benefits — it’d be an uncensorable and dependable fiat payment rail that Bitcoiners and other ‘undesireables’ could use, and maintains public access to central bank money so there is an alternative to having no other option but to use commercial banks and private rails that spy on you and can and do rug people for bullshit reasons. If you want to address the decline of physical cash, replace it with digital cash. Any other kind of CBDC sucks, is actively bad, and should not be built.

Noticed I’m not using Nostr nearly as much as Twitter… I think mostly because Twitter is where the newbies and Bitcoin-curious are, whereas Nostr is largely a crowd of the converted

#[0]​ what do the blue/yellow star and bolt mean? Bit confusing feature discovery, suggest something like a tooltip when tapped/long-pressed just to explain it. Verified-like check mark probably also still confusing for new users, so same could work for those

What is #Ledger Recover, should you be worried, or is it for you? How much do you understand about Hardware Wallets? Do you know this would work on a ColdCard?! Private key extraction through a firmware change has always been possible.

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Can Ledger Recover?

Ledger, the leading Bitcoin & Cryptocurrency hardware wallet manufacturer launched their new Recover product last week. It’s a subscription b...

#Bitcoin  #LedgerRecover #HardwareWallet

Where is the BRC20 spec? How are these tokens minted? Who is minting them with what software? How are they traded? Feels impossible to have an informed opinion without knowing all this, and seems hard to find answers #Bitcoin #ordinals #brc20

Anyone know anything about tbdxxx other than it’s a thing? (Proposed alternative #Bitcoin layer 2 similar to #lightning )

Really struggling to see the attraction of eCash on Bitcoin… The Bitcoin itself is custodies by the mint, so there’s standard custodial counterparty risk. Mint rugpulls = money gone But also, I have to keep my eCash tokens secure and not lose them, just like Bitcoin self-custody. Lose tokens = money gone So surely eCash has the downsides of both custodial and non-custodial Bitcoin/Lighting? Saying the mint would be run by trusted local people is a cop-out, still relies on trust and being able to kneecap someone if they try rug…