Pith Number

pith:SGHQLZVK

pith:2008:SGHQLZVKU5MWAWGNG2PLLRSVZ5

not attested not anchored not stored refs pending

The stellar contribution to the extra-galactic background light and absorption of high-energy gamma-rays

Charles D. Dermer, Justin D. Finke, Soebur Razzaque

arxiv:0807.4294 v2 · 2008-07-27 · astro-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{SGHQLZVKU5MWAWGNG2PLLRSVZ5}

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	2026-05-18T02:35:15.468268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

918f05e6aaa7596058cd369eb5c655cf4a317f7fcc1b4c7f6b0981f728c4f066

Aliases

arxiv: 0807.4294 · arxiv_version: 0807.4294v2 · doi: 10.48550/arxiv.0807.4294 · pith_short_12: SGHQLZVKU5MW · pith_short_16: SGHQLZVKU5MWAWGN · pith_short_8: SGHQLZVK

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/SGHQLZVKU5MWAWGNG2PLLRSVZ5 \
  | 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: 918f05e6aaa7596058cd369eb5c655cf4a317f7fcc1b4c7f6b0981f728c4f066

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a98d415a492a75f18778d28e6c1c64c6f175dac4f46b44ec0ba28188e3468b0e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-27T14:13:28Z",
    "title_canon_sha256": "514a9f71b2c1a4f9f652d54b3a8cf82cd35517227a73873e54fb83ba459fa985"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.4294",
    "kind": "arxiv",
    "version": 2
  }
}