Pith Number

pith:4NP5IHEY

pith:2013:4NP5IHEYGR2QEP5IRIP3TATL3P

not attested not anchored not stored refs pending

Low paleopressure of the Martian atmosphere estimated from the size distribution of ancient craters

Antoine Lucas, Edwin S. Kite, Jean-Pierre Williams, Oded Aharonson

arxiv:1304.4043 v3 · 2013-04-15 · astro-ph.EP · physics.ao-ph · physics.geo-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4NP5IHEYGR2QEP5IRIP3TATL3P}

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	2026-05-18T00:28:27.729588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e35fd41c983475023fa88a1fb9826bdbd544c15c723ed14f53fea5fd5b5a75b0

Aliases

arxiv: 1304.4043 · arxiv_version: 1304.4043v3 · doi: 10.48550/arxiv.1304.4043 · pith_short_12: 4NP5IHEYGR2Q · pith_short_16: 4NP5IHEYGR2QEP5I · pith_short_8: 4NP5IHEY

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/4NP5IHEYGR2QEP5IRIP3TATL3P \
  | 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: e35fd41c983475023fa88a1fb9826bdbd544c15c723ed14f53fea5fd5b5a75b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "711fe6f841337f3a097492f5a87132a1d0bffa3704794988fec0dd3226484fba",
    "cross_cats_sorted": [
      "physics.ao-ph",
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-04-15T10:16:52Z",
    "title_canon_sha256": "aeefcded100fc7a1a93d095860a1f8d445175c9b667c99b969b8bc65e6c0dc9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4043",
    "kind": "arxiv",
    "version": 3
  }
}