bennet / bennet.org is on Nostr

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Last Notes

2026-07-31 19:39:33 UTC

The Coldcard RNG failure is a reminder that entropy is the most overlooked part of Bitcoin self-custody.
I've just updated my interactive explainer on entropy and mnemonic seeds to cover what happened: https://bennet.org/learn/how-secure-is-your-bitcoin-wallets-mnemonic-seed-phrase/
If you're affected by this issue, secure your funds first - don't wait.

2026-06-22 13:29:58 UTC

If you're in the UK, you can't buy bitcoin on a centralised exchange until you pass a test. The FCA calls this an "appropriateness assessment", and it’s supposed to prove you understand how risky and volatile it all is. This is a routine bit of friction that UK stackers will be familiar with.
But last week a thought struck me: what if they made you pass a test before opening an ordinary fiat bank account? Prove you understand where your money actually goes, who legally owns it, and how much of it is really protected?
So I built it! Ironically I expect only bitcoiners will be able to pass it.
https://bennet.org/blog/fca-knowledge-test-fiat-banking/

2026-06-20 11:20:35 UTC

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Thanks, that’s really great to hear! 🙏

2026-06-13 19:25:40 UTC

Just published an interactive explainer on the Lightning network ⚡️ It includes a liquidity routing puzzle, which I think is a fun way to grasp the channel liquidity concept.
https://bennet.org/learn/how-lightning-network-actually-works/
As always, comments and shares appreciated. Keep stacking. #bitcoin #lightning

2026-06-04 17:31:24 UTC

Just published my explainer + tutorial on Silent Payments (BIP-352): https://bennet.org/learn/silent-payments-bitcoin-privacy/
Publish one reusable `sp1` address and share it anywhere, yet every payment lands on a different on-chain address, with no public link between them. No XPUB, no sender interaction.
Sparrow + a Frigate server makes it practical to set up and test today, even without running your own node. #bitcoin #privacy

2026-06-04 08:13:05 UTC

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Thanks for the kind words, @npub1g9y…zlky 🙏 Lots more to come!

2026-04-22 16:42:38 UTC

Been working on this a long time: https://bennet.org/learn/what-is-bitcoin/
It’s a first-principles explainer of Bitcoin, with interactive demos throughout. Incorporates much of what I’ve built this past year. Feedback / suggestions appreciated 🙏

2026-02-09 08:40:52 UTC

I’ve built an interactive explainer for Bitcoin mining - it walks through hashing, proof-of-work, and the difficulty adjustment from first principles. Enjoy!
https://bennet.org/learn/proof-of-work-what-bitcoin-mining-really-does/

2025-11-26 07:51:17 UTC

Interactive explainer of HD wallets, derivation paths, and bitcoin addresses
https://bennet.org/learn/hierarchical-determinism-how-bitcoin-hd-wallets-are-born/