Pith Number

pith:GHIKXSW3

pith:2013:GHIKXSW3C62X32YEQKNZ425KWM

not attested not anchored not stored refs pending

Do Periodicities in Extinction -- with Possible Astronomical Connections -- Survive a Revision of the Geological Timescale?

Adrian L. Melott (Kansas), Richard K. Bambach (Simithsonian)

arxiv:1307.1884 v1 · 2013-07-07 · astro-ph.EP · astro-ph.GA · physics.bio-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{GHIKXSW3C62X32YEQKNZ425KWM}

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	2026-05-18T03:18:05.811388Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31d0abcadb17b57deb04829b9e6baab32720ae2c2d883f225b56be9688a3b344

Aliases

arxiv: 1307.1884 · arxiv_version: 1307.1884v1 · doi: 10.48550/arxiv.1307.1884 · pith_short_12: GHIKXSW3C62X · pith_short_16: GHIKXSW3C62X32YE · pith_short_8: GHIKXSW3

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/GHIKXSW3C62X32YEQKNZ425KWM \
  | 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: 31d0abcadb17b57deb04829b9e6baab32720ae2c2d883f225b56be9688a3b344

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d694fd6dac9ebb69180cd32e2138969a465c0813eb8547df38ac68687ba48dc",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "physics.bio-ph",
      "physics.geo-ph",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-07-07T16:44:47Z",
    "title_canon_sha256": "4bba96f0eadf2fa34445f36d07f3d5bfd49190449fc843a7386af8c3d6bef7e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1884",
    "kind": "arxiv",
    "version": 1
  }
}