Pith Number

pith:OGCXZNOE

pith:2018:OGCXZNOEAYX2JGZ3PVNLCW6G35

not attested not anchored not stored refs pending

Strange Expectations and the Winnie-the-Pooh Problem

Marko Thiel, Nathan Williams

arxiv:1811.02550 v1 · 2018-11-06 · 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{OGCXZNOEAYX2JGZ3PVNLCW6G35}

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	2026-05-18T00:01:23.936733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71857cb5c4062fa49b3b7d5ab15bc6df6cce96f870cfdd7d446bf81393b45344

Aliases

arxiv: 1811.02550 · arxiv_version: 1811.02550v1 · doi: 10.48550/arxiv.1811.02550 · pith_short_12: OGCXZNOEAYX2 · pith_short_16: OGCXZNOEAYX2JGZ3 · pith_short_8: OGCXZNOE

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/OGCXZNOEAYX2JGZ3PVNLCW6G35 \
  | 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: 71857cb5c4062fa49b3b7d5ab15bc6df6cce96f870cfdd7d446bf81393b45344

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0089fa6ab382294d31c17dd48a690fa76e3617bf448603bc8cf82304890ff2bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-11-06T18:51:58Z",
    "title_canon_sha256": "49880d7f375620cdf2439a87950583e4fad41154612981d31b14054da2d4b2e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.02550",
    "kind": "arxiv",
    "version": 1
  }
}