<oembed><type>rich</type><version>1.0</version><author_name>Amboss (npub19t…9nlea)</author_name><author_url>https://nostr.ae/npub19tcpurtt6xulhw0r6sc404j9jraj0h8me2lzs7z2tqewz7l0hpas59nlea</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>This week we shipped 4 interactive explainers on the crypto foundations of Bitcoin and Lightning:&#xA;&#xA;Hash collisions&#xA;Every Bitcoin address has an absurd number of valid private keys that can spend it. Collisions are guaranteed… and still impractical to find.&#xA;https://drop.amboss.tech/hash-explainer.html&#xA;&#xA;Signatures: Nonce reuse&#xA;Sony lost the PS3 master key because one number got used twice. The same bug drained Bitcoin wallets in 2013.&#xA;Run the attack yourself on real secp256k1 — 77 microseconds.&#xA;https://drop.amboss.tech/signatures-explainer.html&#xA;&#xA;What the blockchain sees of a Lightning payment&#xA;Nothing.&#xA;No block. No confirmation. No permanent record. Nobody along the route can take a single sat.&#xA;https://drop.amboss.tech/lightning-explainer.html&#xA;&#xA;SWIFT vs Lightning&#xA;In 2016, hackers stole $951M from Bangladesh’s central bank using correctly authenticated SWIFT messages.&#xA;SWIFT only carries instructions, which is why international wires still take 1–5 days through correspondent bank hops.&#xA;https://drop.amboss.tech/swift-explainer.html&#xA;&#xA;Happy routing ⚡</html></oembed>