Pith Number

pith:HU2QABL7

pith:2013:HU2QABL7AHF4HZ4ENLBU27CZUS

not attested not anchored not stored refs pending

A statistical classification of the unassociated gamma-ray sources in the second Fermi Large Area Telescope Catalog

Yun-Wei Yu, Zhu Mao

arxiv:1304.3989 v1 · 2013-04-15 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HU2QABL7AHF4HZ4ENLBU27CZUS}

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	2026-05-18T01:50:32.980058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d3500057f01cbc3e7846ac34d7c59a4a40158e968392cffe8b8ad9b633e3d82

Aliases

arxiv: 1304.3989 · arxiv_version: 1304.3989v1 · doi: 10.48550/arxiv.1304.3989 · pith_short_12: HU2QABL7AHF4 · pith_short_16: HU2QABL7AHF4HZ4E · pith_short_8: HU2QABL7

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/HU2QABL7AHF4HZ4ENLBU27CZUS \
  | 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: 3d3500057f01cbc3e7846ac34d7c59a4a40158e968392cffe8b8ad9b633e3d82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "356735036ff7992a39b20087d36eb2001738b2a03a9ca472ed008002659e844c",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-04-15T05:40:37Z",
    "title_canon_sha256": "942cdce0c2586b4ad8439ab474ce5e2dfc7d3c4c87d65e3eb3e4f852165f50e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.3989",
    "kind": "arxiv",
    "version": 1
  }
}