Pith Number

pith:RIJD5YAU

pith:2009:RIJD5YAUQGSJHHYLL6AZ565ZKA

not attested not anchored not stored refs pending

Cosmic-ray ionization of molecular clouds

2), (2) INAF-Osservatorio Astrofisico di Arcetri, (3) University of California at Berkeley, Alfred E. Glassgold (3) ((1) Dipartimento di Astronomia e Scienza dello Spazio, Daniele Galli (2), Firenze, Italy, Marco Padovani (1, Universit\`a di Firenze, USA)

arxiv:0904.4149 v1 · 2009-04-27 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RIJD5YAUQGSJHHYLL6AZ565ZKA}

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	2026-05-18T02:13:57.114577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a123ee01481a4939f0b5f819efbb9500f37c5fa68f733c065347a828ced6b8d

Aliases

arxiv: 0904.4149 · arxiv_version: 0904.4149v1 · doi: 10.48550/arxiv.0904.4149 · pith_short_12: RIJD5YAUQGSJ · pith_short_16: RIJD5YAUQGSJHHYL · pith_short_8: RIJD5YAU

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/RIJD5YAUQGSJHHYLL6AZ565ZKA \
  | 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: 8a123ee01481a4939f0b5f819efbb9500f37c5fa68f733c065347a828ced6b8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ac7c7a43ab74a12f33c90a838aed7dd8be6473f15bf8711633f7e45f571a162",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-04-27T17:06:44Z",
    "title_canon_sha256": "300907c871566c02bed6a41655e54fca2b7807d4e0b89fe079cce7f1a29c484f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4149",
    "kind": "arxiv",
    "version": 1
  }
}