Pith Number

pith:UI2ZMCWC

pith:2014:UI2ZMCWCGYJ2QZ5H3GONDXZW2U

not attested not anchored not stored refs pending

Are gamma-ray bursts the sources of ultra-high energy cosmic rays?

2), (2) Penn State U., 3), 3) ((1) Wurzburg U., (3) DESY, Astron. Astrophys., Mauricio Bustamante (1, Philipp Baerwald (1, Walter Winter (1, Zeuthen)

arxiv:1401.1820 v2 · 2014-01-08 · astro-ph.HE · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UI2ZMCWCGYJ2QZ5H3GONDXZW2U}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:45:27.357294Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a235960ac23613a867a7d99cd1df36d50a2f9084b8f3ff29fbe392c9cddb4b76

Aliases

arxiv: 1401.1820 · arxiv_version: 1401.1820v2 · doi: 10.48550/arxiv.1401.1820 · pith_short_12: UI2ZMCWCGYJ2 · pith_short_16: UI2ZMCWCGYJ2QZ5H · pith_short_8: UI2ZMCWC

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/UI2ZMCWCGYJ2QZ5H3GONDXZW2U \
  | 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: a235960ac23613a867a7d99cd1df36d50a2f9084b8f3ff29fbe392c9cddb4b76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24490d23cdd38f71a03fb4855e337f885ae38449d185c528e6d32f2e8c73bfdf",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-01-08T21:00:19Z",
    "title_canon_sha256": "77676820dfee4cb2b6f2320d2ce3f3fecb046ab314e43127b6152d52e002b8a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1820",
    "kind": "arxiv",
    "version": 2
  }
}