Pith Number

pith:S4GJUEMD

pith:2019:S4GJUEMDO2FWQKOQOJZKH6FSZ4

not attested not anchored not stored refs pending

Tracking Paths in Planar Graphs

David Eppstein, James A. Liu, Michael T. Goodrich, Pedro Matias

arxiv:1908.05445 v2 · 2019-08-15 · cs.DM · 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{S4GJUEMDO2FWQKOQOJZKH6FSZ4}

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	2026-07-05T00:07:52.798627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

970c9a1183768b6829d07272a3f8b2cf37ac57d613db5b26e70f6f7d526fe4e4

Aliases

arxiv: 1908.05445 · arxiv_version: 1908.05445v2 · doi: 10.48550/arxiv.1908.05445 · pith_short_12: S4GJUEMDO2FW · pith_short_16: S4GJUEMDO2FWQKOQ · pith_short_8: S4GJUEMD

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/S4GJUEMDO2FWQKOQOJZKH6FSZ4 \
  | 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: 970c9a1183768b6829d07272a3f8b2cf37ac57d613db5b26e70f6f7d526fe4e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccc7d8c5f1024707487a1f69df95f120344814190e8cb010035f976300075346",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2019-08-15T07:13:20Z",
    "title_canon_sha256": "a3ca17541891fcbf3f9e2b57c8579823bb4dde7d4cb594448a6f09df04367c4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05445",
    "kind": "arxiv",
    "version": 2
  }
}