Pith Number

pith:Q27GTN5A

pith:2011:Q27GTN5AE3JZHI7RMKYFNPR7KI

not attested not anchored not stored refs pending

Fermi Large Area Telescope Detection of Bright Gamma-ray Outbursts from a Peculiar Quasar 4C +21.35

B. Lott, C. C. Cheung, D. Donato, D. J. Thompson, D. L. Wood, F. D'Ammando, F. K. Schinzel, F. Longo, G. Iafrate, J. Chiang, J. Finke, L. Escande, L. Stawarz, M. Giroletti, M. Ohno, S. Buson, S. J. Fegan, S. Saito, T. Takahashi, Y. T. Tanaka

arxiv:1101.5339 v1 · 2011-01-27 · 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{Q27GTN5AE3JZHI7RMKYFNPR7KI}

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	2026-05-18T02:03:21.279597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86be69b7a026d393a3f162b056be3f521e05bda9edc3749b17e3bf43966ffc35

Aliases

arxiv: 1101.5339 · arxiv_version: 1101.5339v1 · doi: 10.48550/arxiv.1101.5339 · pith_short_12: Q27GTN5AE3JZ · pith_short_16: Q27GTN5AE3JZHI7R · pith_short_8: Q27GTN5A

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/Q27GTN5AE3JZHI7RMKYFNPR7KI \
  | 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: 86be69b7a026d393a3f162b056be3f521e05bda9edc3749b17e3bf43966ffc35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2357242d384f34dce3e66a9e4047423061f6d18b24cbfa9c1bf3c2b6d9e4059f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-01-27T17:08:43Z",
    "title_canon_sha256": "bb1ae91632ab8aab235e04d0a2fb45e555279d599434d28d049efc307f9925f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.5339",
    "kind": "arxiv",
    "version": 1
  }
}