Pith Number

pith:H3HPHHHP

pith:2022:H3HPHHHPQL3UXVDYGYUJMWZXFI

not attested not anchored not stored refs pending

Industry Experiences with Large-Scale Refactoring

Chris Seifried, Christopher S. Timperley, Ipek Ozkaya, James Ivers, Marouane Kessentini, Robert L. Nord

arxiv:2202.00173 v2 · 2022-02-01 · cs.SE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H3HPHHHPQL3UXVDYGYUJMWZXFI}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T03:56:54.359671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ecef39cef82f74bd4783628965b372a2dd14f70a296b40428def3dba666de66

Aliases

arxiv: 2202.00173 · arxiv_version: 2202.00173v2 · doi: 10.48550/arxiv.2202.00173 · pith_short_12: H3HPHHHPQL3U · pith_short_16: H3HPHHHPQL3UXVDY · pith_short_8: H3HPHHHP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/H3HPHHHPQL3UXVDYGYUJMWZXFI \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3ecef39cef82f74bd4783628965b372a2dd14f70a296b40428def3dba666de66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1960a19099ff16f5042a73edb6cac9899ffee730efff0fdecc38bd51aa3a5f3f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2022-02-01T01:09:31Z",
    "title_canon_sha256": "feaf9910a58b7a99fa5db350ccec3450b450c69b0c54c37573e1142eeb99c626"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.00173",
    "kind": "arxiv",
    "version": 2
  }
}