Pith Number

pith:DDV6WSFQ

pith:2015:DDV6WSFQLK66AES6JJQULP2IMZ

not attested not anchored not stored refs pending

We Found the Smallest Non-Autograph

Ben S. Baumer, Gary S. Bloom, Yijin Wei

arxiv:1511.03913 v1 · 2015-11-12 · 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{DDV6WSFQLK66AES6JJQULP2IMZ}

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	2026-05-18T01:27:06.511989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18ebeb48b05abde0125e4a6145bf486664290c646fa500787f1177ee205a1ea3

Aliases

arxiv: 1511.03913 · arxiv_version: 1511.03913v1 · doi: 10.48550/arxiv.1511.03913 · pith_short_12: DDV6WSFQLK66 · pith_short_16: DDV6WSFQLK66AES6 · pith_short_8: DDV6WSFQ

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/DDV6WSFQLK66AES6JJQULP2IMZ \
  | 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: 18ebeb48b05abde0125e4a6145bf486664290c646fa500787f1177ee205a1ea3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e7e2abb5b69839aa04cc259f632c6ca101ee34d5509dd7706434215e6750ca7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-11-12T14:55:59Z",
    "title_canon_sha256": "6b945adda09f6d2ad58e4a2674786aad63d169eb4c075a34210f9ede5e8c720d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.03913",
    "kind": "arxiv",
    "version": 1
  }
}