Pith Number

pith:KKBABSJY

pith:2012:KKBABSJYELZL26NE227INYPEYG

not attested not anchored not stored refs pending

Software Mutational Robustness

Eric Schulte, Ethan Fast, Stephanie Forrest, Westley Weimer, Zachary P. Fry

arxiv:1204.4224 v3 · 2012-04-18 · 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{KKBABSJYELZL26NE227INYPEYG}

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	2026-05-18T03:19:46.157989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

528200c93822f2bd79a4d6be86e1e4c19434be3e1f4e7f1c6a1b5bfdf4f51287

Aliases

arxiv: 1204.4224 · arxiv_version: 1204.4224v3 · doi: 10.48550/arxiv.1204.4224 · pith_short_12: KKBABSJYELZL · pith_short_16: KKBABSJYELZL26NE · pith_short_8: KKBABSJY

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/KKBABSJYELZL26NE227INYPEYG \
  | 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: 528200c93822f2bd79a4d6be86e1e4c19434be3e1f4e7f1c6a1b5bfdf4f51287

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce77baee8f86e2fb4a1495fea5fcd256f86566862e3dada764dbb9a8932730d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2012-04-18T23:28:43Z",
    "title_canon_sha256": "f3b469b48d519b58a30df47618ea4638d8ecd9ea64284a13d74ff89e9c23b5b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4224",
    "kind": "arxiv",
    "version": 3
  }
}