Pith Number

pith:K63GIWKC

pith:2011:K63GIWKC5MRN2F6K4JLYBJJRJE

not attested not anchored not stored refs pending

Cherenkov light Extrapolation at Ultra High Energy Cosmic Rays in Extensive Air Showers

A.A. Al-Rubaiee

arxiv:1104.2509 v1 · 2011-03-22 · physics.gen-ph · 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{K63GIWKC5MRN2F6K4JLYBJJRJE}

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	2026-05-18T04:24:34.717273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57b6645942eb22dd17cae25780a531492519367632b0abc829597ae18314edeb

Aliases

arxiv: 1104.2509 · arxiv_version: 1104.2509v1 · doi: 10.48550/arxiv.1104.2509 · pith_short_12: K63GIWKC5MRN · pith_short_16: K63GIWKC5MRN2F6K · pith_short_8: K63GIWKC

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/K63GIWKC5MRN2F6K4JLYBJJRJE \
  | 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: 57b6645942eb22dd17cae25780a531492519367632b0abc829597ae18314edeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d3e1c4069ee69dea7386d326a09c5684b29af652592af24361c9c6d346321e9",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2011-03-22T19:40:19Z",
    "title_canon_sha256": "f1f582bf059734ec7fb82453b8b98e12d5fe7d2de6e7347eb6e810f392bfa438"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2509",
    "kind": "arxiv",
    "version": 1
  }
}