Pith Number

pith:2WISZUQ3

pith:2016:2WISZUQ3UCS5PXIQ2ZZPA6XMCW

not attested not anchored not stored refs pending

Graph Nimors

Matthew Skala

arxiv:1604.04072 v1 · 2016-04-14 · 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{2WISZUQ3UCS5PXIQ2ZZPA6XMCW}

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	2026-05-18T01:17:06.754161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5912cd21ba0a5d7dd10d672f07aec15a16e65b75d537b306b71efb2391bd404

Aliases

arxiv: 1604.04072 · arxiv_version: 1604.04072v1 · doi: 10.48550/arxiv.1604.04072 · pith_short_12: 2WISZUQ3UCS5 · pith_short_16: 2WISZUQ3UCS5PXIQ · pith_short_8: 2WISZUQ3

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/2WISZUQ3UCS5PXIQ2ZZPA6XMCW \
  | 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: d5912cd21ba0a5d7dd10d672f07aec15a16e65b75d537b306b71efb2391bd404

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0156984388732fdf874cca160744ac1e575786664b49feb3a7fb7a5abd541139",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-04-14T08:34:22Z",
    "title_canon_sha256": "8dbecc681108e0e6d80cdd0c8551e27a86dd5dc63c1a631edca9225a23c1e6ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04072",
    "kind": "arxiv",
    "version": 1
  }
}