Pith Number

pith:EQUKRQCJ

pith:2008:EQUKRQCJUETGDJHUNJQYGR3NUM

not attested not anchored not stored refs pending

On the Possible Association of Ultra High Energy Cosmic Rays with Nearby Active Galaxies

Chi C. Cheung (NASA/GSFC), Igor V. Moskalenko (Stanford/KIPAC), Lukasz Stawarz (KIPAC), Troy A. Porter (SCIPP/UCSC)

arxiv:0805.1260 v2 · 2008-05-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EQUKRQCJUETGDJHUNJQYGR3NUM}

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	2026-05-18T02:35:22.549402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2428a8c049a12661a4f46a6183476da318180ebd84ac950abc4d0bdc37fea3bd

Aliases

arxiv: 0805.1260 · arxiv_version: 0805.1260v2 · doi: 10.48550/arxiv.0805.1260 · pith_short_12: EQUKRQCJUETG · pith_short_16: EQUKRQCJUETGDJHU · pith_short_8: EQUKRQCJ

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/EQUKRQCJUETGDJHUNJQYGR3NUM \
  | 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: 2428a8c049a12661a4f46a6183476da318180ebd84ac950abc4d0bdc37fea3bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66d3234968d7f963f647859984a68ff288292a9aed55d1f9003caa2ab08711a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-05-09T18:36:34Z",
    "title_canon_sha256": "8528b25429ed291f2a00cb6e23fa3cff8b6c352250cc5853b9bb5bd69db5c428"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.1260",
    "kind": "arxiv",
    "version": 2
  }
}