Pith Number

pith:VWRI4U3J

pith:2012:VWRI4U3JRDJIKXTB3MDJ73QLYG

not attested not anchored not stored refs pending

Folding graphs

Ton Kloks, Yue-Li Wang

arxiv:1207.0932 v2 · 2012-07-04 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VWRI4U3JRDJIKXTB3MDJ73QLYG}

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	2026-05-18T03:51:34.860761Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ada28e536988d2855e61db069fee0bc1835a5226c4118e4f821f2bd920de2e4e

Aliases

arxiv: 1207.0932 · arxiv_version: 1207.0932v2 · doi: 10.48550/arxiv.1207.0932 · pith_short_12: VWRI4U3JRDJI · pith_short_16: VWRI4U3JRDJIKXTB · pith_short_8: VWRI4U3J

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/VWRI4U3JRDJIKXTB3MDJ73QLYG \
  | 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: ada28e536988d2855e61db069fee0bc1835a5226c4118e4f821f2bd920de2e4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3eaeb66199506fcb1e279ac96a7b9ecc680fe11063eb91af185fcfd5efe17402",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2012-07-04T09:37:06Z",
    "title_canon_sha256": "c15a7f8ee2bc503a66813378dab9af3d8ee5340d92af86605e52e6c734d805d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.0932",
    "kind": "arxiv",
    "version": 2
  }
}