Pith Number

pith:72SEZSVJ

pith:2015:72SEZSVJH2Q2G3SWWME2K7E4SM

not attested not anchored not stored refs pending

The Utility of Untangling

Vida Dujmovi\'c

arxiv:1506.04092 v3 · 2015-06-12 · cs.CG · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{72SEZSVJH2Q2G3SWWME2K7E4SM}

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	2026-05-18T01:33:51.486806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fea44ccaa93ea1a36e56b309a57c9c931824c037af2f674f37278269ee168eb9

Aliases

arxiv: 1506.04092 · arxiv_version: 1506.04092v3 · doi: 10.48550/arxiv.1506.04092 · pith_short_12: 72SEZSVJH2Q2 · pith_short_16: 72SEZSVJH2Q2G3SW · pith_short_8: 72SEZSVJ

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/72SEZSVJH2Q2G3SWWME2K7E4SM \
  | 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: fea44ccaa93ea1a36e56b309a57c9c931824c037af2f674f37278269ee168eb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36b48eaffc2f12348abd745e98d606991692b796cd50c46222b8182bcac08384",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2015-06-12T18:07:39Z",
    "title_canon_sha256": "d29141f187ff6d088c44f9d9ac510aeac3321a317058f717076708df402b44a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.04092",
    "kind": "arxiv",
    "version": 3
  }
}