Pith Number

pith:FLFH2ZIA

pith:2013:FLFH2ZIANMZFBEHOMZRCYBSHDF

not attested not anchored not stored refs pending

Mass Extinction And The Structure Of The Milky Way

E. J. Crawford, J. Horner, M. D. Filipovi\'c, N. F. H. Tothill

arxiv:1309.4838 v1 · 2013-09-19 · astro-ph.GA · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FLFH2ZIANMZFBEHOMZRCYBSHDF}

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	2026-05-18T01:47:35.659886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2aca7d65006b325090ee66622c0647194d2f0722214c9b460285807d0888ed9c

Aliases

arxiv: 1309.4838 · arxiv_version: 1309.4838v1 · doi: 10.48550/arxiv.1309.4838 · pith_short_12: FLFH2ZIANMZF · pith_short_16: FLFH2ZIANMZFBEHO · pith_short_8: FLFH2ZIA

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/FLFH2ZIANMZFBEHOMZRCYBSHDF \
  | 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: 2aca7d65006b325090ee66622c0647194d2f0722214c9b460285807d0888ed9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11111b430a24046d284653699dbb772f91186513d44061de20107b4042100332",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-09-19T02:36:18Z",
    "title_canon_sha256": "2d06169970eb9dd30540d13a08bc0d0ec2ad334b8023f97d240fcde2f4542bfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4838",
    "kind": "arxiv",
    "version": 1
  }
}