Pith Number

pith:VDREIKR4

pith:2018:VDREIKR4UPAV7CEEYXQPULIWEZ

not attested not anchored not stored refs pending

Ortho-polygon Visibility Representations of 3-connected 1-plane Graphs

Alessandra Tappini, Fabrizio Montecchiani, Giuseppe Liotta

arxiv:1807.01247 v2 · 2018-07-03 · cs.DS · 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{VDREIKR4UPAV7CEEYXQPULIWEZ}

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	2026-05-18T00:09:03.728821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8e2442a3ca3c15f8884c5e0fa2d16265cefb3302a165e370285593e7afb68e5

Aliases

arxiv: 1807.01247 · arxiv_version: 1807.01247v2 · doi: 10.48550/arxiv.1807.01247 · pith_short_12: VDREIKR4UPAV · pith_short_16: VDREIKR4UPAV7CEE · pith_short_8: VDREIKR4

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/VDREIKR4UPAV7CEEYXQPULIWEZ \
  | 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: a8e2442a3ca3c15f8884c5e0fa2d16265cefb3302a165e370285593e7afb68e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bda3d7bd127f7eb88ff81550ffec9e875bff2d423fdf82c76fe2281a95803a7",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-07-03T15:46:30Z",
    "title_canon_sha256": "976fb8d07efa72ba08c4cbec7b562f0595ce29fc6da0490356e2857d2253ea6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01247",
    "kind": "arxiv",
    "version": 2
  }
}