Pith Number

pith:EY7DBDXO

pith:2011:EY7DBDXOGBKW4ENKU5C5TOR6LO

not attested not anchored not stored refs pending

Extragalactic Background Light and Gamma-Ray Attenuation

Alberto Dominguez, Joel R. Primack, Rachel S. Somerville, Rudy C. Gilmore

arxiv:1107.2566 v1 · 2011-07-13 · 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{EY7DBDXOGBKW4ENKU5C5TOR6LO}

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	2026-05-18T02:01:19.053964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

263e308eee30556e11aaa745d9ba3e5b8167b9eb6f5b8faec9b1daae997ed709

Aliases

arxiv: 1107.2566 · arxiv_version: 1107.2566v1 · doi: 10.48550/arxiv.1107.2566 · pith_short_12: EY7DBDXOGBKW · pith_short_16: EY7DBDXOGBKW4ENK · pith_short_8: EY7DBDXO

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/EY7DBDXOGBKW4ENKU5C5TOR6LO \
  | 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: 263e308eee30556e11aaa745d9ba3e5b8167b9eb6f5b8faec9b1daae997ed709

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45c1cd8845d96cf8ff3631ece40397d12ceea18ccf2d9d29c5b21378a21850ae",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-07-13T14:57:14Z",
    "title_canon_sha256": "9d5d7ec130f376f847102c240e32ea839ccd54b2760d86702dae5a206e1400c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.2566",
    "kind": "arxiv",
    "version": 1
  }
}