Pith Number

pith:IWHQZ2Y6

pith:2010:IWHQZ2Y6ZWOC4IG6Y5H23CQIZG

not attested not anchored not stored refs pending

Lombardi Drawings of Graphs

Christian A. Duncan, David Eppstein, Martin N\"ollenburg, Michael T. Goodrich, Stephen G. Kobourov

arxiv:1009.0579 v1 · 2010-09-03 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IWHQZ2Y6ZWOC4IG6Y5H23CQIZG}

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	2026-05-18T04:06:08.091167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

458f0ceb1ecd9c2e20dec74fad8a08c9a7ce08619259e407051cac4e1f6fdbb7

Aliases

arxiv: 1009.0579 · arxiv_version: 1009.0579v1 · doi: 10.48550/arxiv.1009.0579 · pith_short_12: IWHQZ2Y6ZWOC · pith_short_16: IWHQZ2Y6ZWOC4IG6 · pith_short_8: IWHQZ2Y6

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/IWHQZ2Y6ZWOC4IG6Y5H23CQIZG \
  | 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: 458f0ceb1ecd9c2e20dec74fad8a08c9a7ce08619259e407051cac4e1f6fdbb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5444aa4db80325b5d2cab36c4e402d3079992bd8af6a0f6ca859abcc82b1908a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2010-09-03T03:36:03Z",
    "title_canon_sha256": "65801e0b8355e175fee6044669a406911557fafcc147782cd86fea19fea5c073"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.0579",
    "kind": "arxiv",
    "version": 1
  }
}