Pith Number

pith:CGBAIQR6

pith:2009:CGBAIQR6N5H2BTSNHK2OMUERDY

not attested not anchored not stored refs pending

Probing intergalactic radiation fields during cosmic reionization through gamma-ray absorption

Andrea Ferrara, Benedetta Ciardi, Raffaella Schneider, Ruben Salvaterra, Susumu Inoue, Tirthankar Roy Choudhury

arxiv:0906.2495 v2 · 2009-06-15 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CGBAIQR6N5H2BTSNHK2OMUERDY}

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	2026-05-18T02:13:20.339197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

118204423e6f4fa0ce4d3ab4e650911e00790b9fa49d478c874d42d0c07eb923

Aliases

arxiv: 0906.2495 · arxiv_version: 0906.2495v2 · doi: 10.48550/arxiv.0906.2495 · pith_short_12: CGBAIQR6N5H2 · pith_short_16: CGBAIQR6N5H2BTSN · pith_short_8: CGBAIQR6

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/CGBAIQR6N5H2BTSNHK2OMUERDY \
  | 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: 118204423e6f4fa0ce4d3ab4e650911e00790b9fa49d478c874d42d0c07eb923

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8338a263d82967f6b7207b91463d8b51e2c2b5dd263df42d6c6e9212c18d49bd",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-15T19:42:24Z",
    "title_canon_sha256": "974fdcd8b08db7c24d4096af6e317b36daa5a1fe212070030ea5c342e273ac6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2495",
    "kind": "arxiv",
    "version": 2
  }
}