Pith Number

pith:LFVD72PV

pith:2009:LFVD72PVNEA35TNKENKO7IJ7NX

not attested not anchored not stored refs pending

Testing the link between terrestrial climate change and Galactic spiral arm transit

Adrian L. Melott (University of Kansas), Andrew C. Overholt, Martin K. Pohl (Iowa State University)

arxiv:0906.2777 v2 · 2009-06-15 · astro-ph.GA · astro-ph.EP · physics.ao-ph · physics.geo-ph · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LFVD72PVNEA35TNKENKO7IJ7NX}

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	2026-05-18T04:29:42.733262Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

596a3fe9f56901becdaa2354efa13f6df12477983ca454145986323d4623de64

Aliases

arxiv: 0906.2777 · arxiv_version: 0906.2777v2 · doi: 10.48550/arxiv.0906.2777 · pith_short_12: LFVD72PVNEA3 · pith_short_16: LFVD72PVNEA35TNK · pith_short_8: LFVD72PV

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/LFVD72PVNEA35TNKENKO7IJ7NX \
  | 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: 596a3fe9f56901becdaa2354efa13f6df12477983ca454145986323d4623de64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fbd791ef2dbabc04238cf855d44b7f2fb7032a22e917d78ecf3be59a1c27014",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "physics.ao-ph",
      "physics.geo-ph",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-06-15T19:59:50Z",
    "title_canon_sha256": "ec8c2bb92f890944dc58a7c24b8307d28f8345cd135568df922e6687eaf8de7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2777",
    "kind": "arxiv",
    "version": 2
  }
}