Slow notes on unraveling opaque things: cryptography, typography, cartography, and whatever else looks like ciphertext until it doesn't.https://ciphertext.blog/https://ciphertext.blog/posts/06-frankenstein-key/https://ciphertext.blog/posts/06-frankenstein-key/One key, two secrets, and the checksum that isn't there.Tue, 07 Apr 2026 00:00:00 GMThttps://ciphertext.blog/posts/05-too-much-attention/https://ciphertext.blog/posts/05-too-much-attention/128k tokens of context. Perfect retrieval. Zero reasoning.Sat, 21 Feb 2026 00:00:00 GMThttps://ciphertext.blog/posts/04-how-far-can-attention-reach/https://ciphertext.blog/posts/04-how-far-can-attention-reach/Stretching a 4k model to 128k---what changes, what breaks, what costs.Sat, 21 Feb 2026 00:00:00 GMThttps://ciphertext.blog/posts/03-what-is-attention/https://ciphertext.blog/posts/03-what-is-attention/Tracing a real transformer, one tensor at a time.Sat, 21 Feb 2026 00:00:00 GMThttps://ciphertext.blog/posts/02-stabilizer/https://ciphertext.blog/posts/02-stabilizer/Stabilizers, Magic States, and Why T Gates Are ExpensiveMon, 16 Feb 2026 00:00:00 GMThttps://ciphertext.blog/posts/01-leanly-lightly-proving-iszero/https://ciphertext.blog/posts/01-leanly-lightly-proving-iszero/What a tiny program can teach us about machines and correctnessSun, 25 Jan 2026 00:00:00 GMT