Pith Number

pith:VEKLD5DA

pith:2009:VEKLD5DARH5EOQTKL2K37IQRAR

not attested not anchored not stored refs pending

An analytical solution for Kepler's problem

2, (2) Department of Astronomy, 3) ((1) Harvard-Smithsonian Center for Astrophysics, (3) Konkoly Observatory of the Hungarian Academy of Sciences), Andr\'as P\'al (1, E\"otv\"os Lor\'and University

arxiv:0904.0324 v1 · 2009-04-02 · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VEKLD5DARH5EOQTKL2K37IQRAR}

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	2026-05-18T02:14:08.066839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a914b1f46089fa47426a5e95bfa21104755bed14f47878b0a7d36de3e271f694

Aliases

arxiv: 0904.0324 · arxiv_version: 0904.0324v1 · doi: 10.48550/arxiv.0904.0324 · pith_short_12: VEKLD5DARH5E · pith_short_16: VEKLD5DARH5EOQTK · pith_short_8: VEKLD5DA

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/VEKLD5DARH5EOQTKL2K37IQRAR \
  | 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: a914b1f46089fa47426a5e95bfa21104755bed14f47878b0a7d36de3e271f694

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc998875735cbdba68193c5c29cee277021f10bbd07c90dea0a8c3fc75471542",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-04-02T07:16:51Z",
    "title_canon_sha256": "c0bcfba7c6657066acef3b1ebd47b4548bc3db544a8d58828566bb1765231c37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0324",
    "kind": "arxiv",
    "version": 1
  }
}