Pith Number

pith:Y6OKKO4N

pith:2018:Y6OKKO4NPKO57CY5ZFZBFOVZRK

not attested not anchored not stored refs pending

On a question of Sidorenko

D. Cherkashin, F. Petrov, V. Sokolov

arxiv:1901.00440 v1 · 2018-12-20 · 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{Y6OKKO4NPKO57CY5ZFZBFOVZRK}

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	2026-05-17T23:57:03.849945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c79ca53b8d7a9ddf8b1dc97212bab98ab032007b3e5e4fc7446931ff23c596f4

Aliases

arxiv: 1901.00440 · arxiv_version: 1901.00440v1 · doi: 10.48550/arxiv.1901.00440 · pith_short_12: Y6OKKO4NPKO5 · pith_short_16: Y6OKKO4NPKO57CY5 · pith_short_8: Y6OKKO4N

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/Y6OKKO4NPKO57CY5ZFZBFOVZRK \
  | 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: c79ca53b8d7a9ddf8b1dc97212bab98ab032007b3e5e4fc7446931ff23c596f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c522696e1649eedf452f67bd68dec694665045529eea9dcdf2d57f77fcb2f2b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-12-20T15:18:33Z",
    "title_canon_sha256": "3792fdf3a6b578429bfd1813050b27de661edb09c7d298def7b7e72f4548f67b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00440",
    "kind": "arxiv",
    "version": 1
  }
}