Pith Number

pith:PRGLHREF

pith:2010:PRGLHREF3VJHQXS7OAGM5VPI4Y

not attested not anchored not stored refs pending

Acceleration of Ultra-High Energy Cosmic Rays in the Colliding Shells of Blazars and GRBs: Constraints from the Fermi Gamma ray Space Telescope

Charles D. Dermer (NRL), Soebur Razzaque (NRL)

arxiv:1004.4249 v2 · 2010-04-24 · astro-ph.HE · hep-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{PRGLHREF3VJHQXS7OAGM5VPI4Y}

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	2026-05-18T04:34:27.599944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c4cb3c485dd52785e5f700cced5e8e60787383cf1da7dbf262c306eaa7d4467

Aliases

arxiv: 1004.4249 · arxiv_version: 1004.4249v2 · doi: 10.48550/arxiv.1004.4249 · pith_short_12: PRGLHREF3VJH · pith_short_16: PRGLHREF3VJHQXS7 · pith_short_8: PRGLHREF

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/PRGLHREF3VJHQXS7OAGM5VPI4Y \
  | 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: 7c4cb3c485dd52785e5f700cced5e8e60787383cf1da7dbf262c306eaa7d4467

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "603bd86e40a27b4321e4578cc1bf56ffeb6d24e4c868270835f9d9fa35d89f70",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-04-24T02:18:39Z",
    "title_canon_sha256": "7d5fa8a326c25155a1484445001805a8966c0656fdd483e435e32d46496ef635"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.4249",
    "kind": "arxiv",
    "version": 2
  }
}