Pith Number

pith:Q7R4OQ5F

pith:2009:Q7R4OQ5FL5OGSFZME5LK4X22DC

not attested not anchored not stored refs pending

Constraining Decaying Dark Matter with Fermi LAT Gamma-rays

Christoph Weniger, Guenter Sigl, Javier Redondo, Le Zhang, Luca Maccione

arxiv:0912.4504 v2 · 2009-12-22 · astro-ph.HE · astro-ph.CO · hep-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{Q7R4OQ5FL5OGSFZME5LK4X22DC}

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	2026-05-18T02:33:55.589371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87e3c743a55f5c69172c2756ae5f5a18becb5f164bf0da1849b3529c39c9b5cd

Aliases

arxiv: 0912.4504 · arxiv_version: 0912.4504v2 · doi: 10.48550/arxiv.0912.4504 · pith_short_12: Q7R4OQ5FL5OG · pith_short_16: Q7R4OQ5FL5OGSFZM · pith_short_8: Q7R4OQ5F

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/Q7R4OQ5FL5OGSFZME5LK4X22DC \
  | 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: 87e3c743a55f5c69172c2756ae5f5a18becb5f164bf0da1849b3529c39c9b5cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82cf591b7a1e7194c134a7a730f77e27fa49e1261e7355b7e4fa6ff6f62919b9",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-12-22T20:32:20Z",
    "title_canon_sha256": "4fc680408ff04ed18373ce9f57652ec9bbd715d709140d07b620efc0253e4a2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4504",
    "kind": "arxiv",
    "version": 2
  }
}