Pith Number

pith:UB4HJ3U3

pith:2019:UB4HJ3U375RAMYCBNKM7I4R7U7

not attested not anchored not stored refs pending

Search for ultra-high energy photons: observing the preshower effect with gamma-ray telescopes

Dariusz Gora, David E. Alvarez Castillo, Jaroslaw Stasielak, Jilberto Zamora-Saa, Karel Smolek, Katarzyna Smelcerz, Kevin Almeida Cheminant, Konrad Kopanski, Krzysztof Rzecki, Marcin Kasztelan, Marta Marek, Michal Niedzwiecki, Niraj Dhital, Oleksandr Sushchov, Pawel Jagoda, Peter Kovacs, Piotr Homola, Tadeusz Wibig, Vahab Nazari

arxiv:1908.08805 v2 · 2019-08-23 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UB4HJ3U375RAMYCBNKM7I4R7U7}

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	2026-07-04T23:59:35.163902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a07874ee9bff620660416a99f4723fa7c67b544652364523080dbecb2160213e

Aliases

arxiv: 1908.08805 · arxiv_version: 1908.08805v2 · doi: 10.48550/arxiv.1908.08805 · pith_short_12: UB4HJ3U375RA · pith_short_16: UB4HJ3U375RAMYCB · pith_short_8: UB4HJ3U3

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/UB4HJ3U375RAMYCBNKM7I4R7U7 \
  | 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: a07874ee9bff620660416a99f4723fa7c67b544652364523080dbecb2160213e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78bec42670e5223a0bbf5164fb51d5dfb456bdf0b8c8c46bc2f83bc35d4e5511",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-08-23T13:05:31Z",
    "title_canon_sha256": "09fb92b8143549202d43b330df45dba9690420ca3f594f3f4cbfb81b91d5bcba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08805",
    "kind": "arxiv",
    "version": 2
  }
}