Pith Number

pith:QONCC2Y7

pith:2018:QONCC2Y7W3UUPHEZR2GQZHDBQW

not attested not anchored not stored refs pending

Diameter Spanners, Eccentricity Spanners, and Approximating Extremal Distances

Keerti Choudhary, Omer Gold

arxiv:1812.01602 v2 · 2018-12-04 · 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{QONCC2Y7W3UUPHEZR2GQZHDBQW}

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	2026-05-17T23:53:08.926118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

839a216b1fb6e9479c998e8d0c9c6185aab9a6cab2beced2b23c6cbc2e279d2d

Aliases

arxiv: 1812.01602 · arxiv_version: 1812.01602v2 · doi: 10.48550/arxiv.1812.01602 · pith_short_12: QONCC2Y7W3UU · pith_short_16: QONCC2Y7W3UUPHEZ · pith_short_8: QONCC2Y7

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/QONCC2Y7W3UUPHEZR2GQZHDBQW \
  | 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: 839a216b1fb6e9479c998e8d0c9c6185aab9a6cab2beced2b23c6cbc2e279d2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0857dcb018026180198108c95c2919383afc05a5647d4934f09ea922a769aa0a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-12-04T18:57:18Z",
    "title_canon_sha256": "b55c71ea7f046a09bedee6f56e17e97f5d9c58e4cd2973a5f5632d99c2f91589"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.01602",
    "kind": "arxiv",
    "version": 2
  }
}