Pith Number

pith:WSQAYGIC

pith:2011:WSQAYGICGSRJEEESLZDZBZBZAZ

not attested not anchored not stored refs pending

Planarity Testing Revisited

Gautam Prakriya, Samir Datta

arxiv:1101.2637 v1 · 2011-01-13 · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSQAYGICGSRJEEESLZDZBZBZAZ}

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	2026-05-18T02:22:57.801810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4a00c190234a29210925e4790e4390669d3b0b0a3ccbdcb20512969daa73fec

Aliases

arxiv: 1101.2637 · arxiv_version: 1101.2637v1 · doi: 10.48550/arxiv.1101.2637 · pith_short_12: WSQAYGICGSRJ · pith_short_16: WSQAYGICGSRJEEES · pith_short_8: WSQAYGIC

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/WSQAYGICGSRJEEESLZDZBZBZAZ \
  | 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: b4a00c190234a29210925e4790e4390669d3b0b0a3ccbdcb20512969daa73fec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e1d04f0f98e5a888c7b6be512f653e98fb9cd94536462145d5afd18c204e07d",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-01-13T19:19:11Z",
    "title_canon_sha256": "24ff29408d59d103d8103b652b4b9231d489bde08cad0f8fd88223506a5e7380"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.2637",
    "kind": "arxiv",
    "version": 1
  }
}