Pith Number

pith:2LQ4FYLK

pith:2012:2LQ4FYLK2HEY2IFM4PM6SSYDGG

not attested not anchored not stored refs pending

Making Triangles Colorful

Jean Cardinal, Kolja Knauer, Piotr Micek, Torsten Ueckerdt

arxiv:1212.2346 v1 · 2012-12-11 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2LQ4FYLK2HEY2IFM4PM6SSYDGG}

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	2026-05-18T03:38:45.234938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2e1c2e16ad1c98d20ace3d9e94b0331b1d846948347e6beee88d6ef6ad9e4ce

Aliases

arxiv: 1212.2346 · arxiv_version: 1212.2346v1 · doi: 10.48550/arxiv.1212.2346 · pith_short_12: 2LQ4FYLK2HEY · pith_short_16: 2LQ4FYLK2HEY2IFM · pith_short_8: 2LQ4FYLK

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/2LQ4FYLK2HEY2IFM4PM6SSYDGG \
  | 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: d2e1c2e16ad1c98d20ace3d9e94b0331b1d846948347e6beee88d6ef6ad9e4ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0dda69a604a4b96e8eb1c44bb96f5006c4b1a34e82c86f1bf32c17ccbe07ec4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-12-11T09:19:35Z",
    "title_canon_sha256": "2227c96c0cf44e0c37d9a9c372fb7a71ad150f02950abe3d9d86db9cc687bdeb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.2346",
    "kind": "arxiv",
    "version": 1
  }
}