Pith Number

pith:4HW4OJO4

pith:2007:4HW4OJO4QCYA7AAHXU7QRJQLYU

not attested not anchored not stored refs pending

Constructing Optimal Highways

Alexander Wolff, Chan-Su Shin, Christian Knauer, Hee-Kap Ahn, Helmut Alt, Hyeon-Suk Na, Otfried Cheong, Peter Brass, Sang Won Bae, Tetsuo Asano

arxiv:cs/0703037 v1 · 2007-03-08 · 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{4HW4OJO4QCYA7AAHXU7QRJQLYU}

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	2026-05-18T04:41:53.065865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1edc725dc80b00f8007bd3f08a60bc500be5adda906f6258c2046883f0388ea

Aliases

arxiv: cs/0703037 · arxiv_version: cs/0703037v1 · doi: 10.48550/arxiv.cs/0703037 · pith_short_12: 4HW4OJO4QCYA · pith_short_16: 4HW4OJO4QCYA7AAH · pith_short_8: 4HW4OJO4

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/4HW4OJO4QCYA7AAHXU7QRJQLYU \
  | 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: e1edc725dc80b00f8007bd3f08a60bc500be5adda906f6258c2046883f0388ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50df0d692e6f1a1753485cfbbe7b96918df085c352c3bba69dfdeaf2edebc933",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.CG",
    "submitted_at": "2007-03-08T17:22:21Z",
    "title_canon_sha256": "03c4b08b8965f6f98cae57cd705464ba8ce5ad7733e13085160124f71ff7efb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0703037",
    "kind": "arxiv",
    "version": 1
  }
}