Every panel below is one facet of contribution, not a score. Leadership rotates from panel to panel — that rotation is the point. Read them together; no single number ranks a person.
Reproduce ↗ Every number here is regenerated from git + GitHub — run the exact commands yourself and re-verify.How to read this. Data is filtered to real, authored code that shipped to main (= production): generated files, lockfiles, VM traces, vendored upstream and build output stripped; 19 git identities merged into 9 people; MystenLabs upstream (George, Ioannis) excluded. These are conversation starters for a blameless retro — not a public leaderboard.
All stats run over commits reachable from main (the production line — no release tags exist). Live code = git blame of the current tree with copy/move tracing (-w -M -C), so reverted/rewritten code drops out and moved code is credited to its original author. Origin-traced vs last-touch blame differed <2% per person — last-toucher bias was negligible.
Line-volume ≠ impact: a 3-line mainnet-gas fix outweighs 2,000 lines of dead feature. Not captured: pairing, design, ops/incident response, mentoring, and the judgement in a good review. Treat low line-counts (esp. for refactor- and review-heavy people) as under-stated, never as "did little."