Pith Number

pith:LRCNFNAT

pith:2009:LRCNFNATPOX6BG5SWEUFCDDFVG

not attested not anchored not stored refs pending

Simulation of the Cosmic Evolution of Atomic and Molecular Hydrogen in Galaxies

D. Croton, D. Obreschkow, G. De Lucia, S. Khochfar, S. Rawlings

arxiv:0904.2221 v3 · 2009-04-14 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LRCNFNATPOX6BG5SWEUFCDDFVG}

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	2026-05-18T04:29:43.509784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c44d2b4137bafe09bb2b128510c65a98e1afe2c4ff346434f7a6bd0d7fde89f

Aliases

arxiv: 0904.2221 · arxiv_version: 0904.2221v3 · doi: 10.48550/arxiv.0904.2221 · pith_short_12: LRCNFNATPOX6 · pith_short_16: LRCNFNATPOX6BG5S · pith_short_8: LRCNFNAT

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/LRCNFNATPOX6BG5SWEUFCDDFVG \
  | 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: 5c44d2b4137bafe09bb2b128510c65a98e1afe2c4ff346434f7a6bd0d7fde89f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97f58444e714142ad1f34921b23387c91ccc8b6f69910da89020f7b1990835d0",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-14T23:22:55Z",
    "title_canon_sha256": "427d0fd0e18602103d2c2c041f6b2b534af5ed744c7c8bc0b6879c54be983e57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2221",
    "kind": "arxiv",
    "version": 3
  }
}