Pith Number

pith:SMF2V2RQ

pith:2016:SMF2V2RQZ5SJA6EMVAYFYBMWID

not attested not anchored not stored refs pending

Non-aligned drawings of planar graphs

Claire Pennarun, Therese Biedl

arxiv:1606.02220 v4 · 2016-06-07 · 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{SMF2V2RQZ5SJA6EMVAYFYBMWID}

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	2026-05-18T00:56:30.951522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

930baaea30cf6490788ca8305c059640db58abf41b700ba4c5cae50574df4dbf

Aliases

arxiv: 1606.02220 · arxiv_version: 1606.02220v4 · doi: 10.48550/arxiv.1606.02220 · pith_short_12: SMF2V2RQZ5SJ · pith_short_16: SMF2V2RQZ5SJA6EM · pith_short_8: SMF2V2RQ

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/SMF2V2RQZ5SJA6EMVAYFYBMWID \
  | 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: 930baaea30cf6490788ca8305c059640db58abf41b700ba4c5cae50574df4dbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00cbd759cb5292b618196592f4b19c1265afacff727a52f15c3713fc4db0c6b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2016-06-07T17:09:56Z",
    "title_canon_sha256": "9e9ab2968084611bbad7d9a814bf8e9a0f1788ae63a35e0bde965059efd29b70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.02220",
    "kind": "arxiv",
    "version": 4
  }
}