30 real blocks, deterministically turned into music — no randomness, fully reproducible

Small side project, sharing in case anyone finds the mapping interesting.

https://preview.redd.it/np0sj9jcpeih1.png?812&format=png&auto=webp&s=8ba419454dd6f114c8e2dd0b4dd3b12f80e95c99

Takes a contiguous range of already-mined blocks and turns them into a short piece of music. Nothing random — same block range in, same audio out, every time. The mapping:

- pitch — a slice of the block hash (past the leading zeros PoW forces, so it's not just measuring difficulty), onto a pentatonic scale so nothing clashes

- chord thickness — tx count vs. the batch median: quiet block = single note, busy block = +fifth, very busy block = +octave

- note length — real gap to the next block, compressed 60:1

- timbre — block weight blended in as a second detuned oscillator

There's an interactive score (one bar per block, click to jump playback) and the raw block table underneath, so the mapping is checkable against reality rather than taken on faith.

To be clear given everything going on lately: this is read-only. It only pulls public block headers from a block explorer API — no wallet, no keys, no addresses, nothing anywhere near funds. Just data sonification.

https://www.nrcode.com/chainsong.html

Happy to share the Python if anyone wants to generate their own range.