Local engine · AGPL $0

TNSSRC

PCC's sibling that runs on your machine. Compress where the file sits, verify with decode plus SHA-256. Silesia 43,724,575 — 12 of 12 back, byte-identical.

See the Silesia proof Hosted version: PCC Grant $390

What it does

Local lossless compression under the same Shared Spine as PCC: structure, literals, and mix heads, packed only when strictly shorter — else stored RAW. Never expands. DECODE_OK, every byte back.

How you get it

AGPL open terms, $0. Bakeoff entry $19.31, full grant $390. Already-paid path: email subject PACKAGE ACCESS.

The numbers

Silesia 43,724,575 · 12/12 DECODE_OK · AGPL $0. Compare against PCC's hosted 51,498,645 on Silesia.