Pith Number

pith:XDE22CD3

pith:2009:XDE22CD3ACJHXRD3NGDVG4RK53

not attested not anchored not stored refs pending

Synchrotron radiation from ultra-high energy protons and the Fermi observations of GRB 080916C

Charles D. Dermer, Justin D. Finke, Soebur Razzaque

arxiv:0908.0513 v4 · 2009-08-04 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XDE22CD3ACJHXRD3NGDVG4RK53}

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	2026-05-18T04:41:26.232051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8c9ad087b00927bc47b698753722aeeff51525115f559a84839d0e8ae0f6782

Aliases

arxiv: 0908.0513 · arxiv_version: 0908.0513v4 · doi: 10.48550/arxiv.0908.0513 · pith_short_12: XDE22CD3ACJH · pith_short_16: XDE22CD3ACJHXRD3 · pith_short_8: XDE22CD3

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/XDE22CD3ACJHXRD3NGDVG4RK53 \
  | 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: b8c9ad087b00927bc47b698753722aeeff51525115f559a84839d0e8ae0f6782

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93807acb09aa77eb490c53f06bf32f993509365810e25a16e1420aa10952b210",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-08-04T19:09:25Z",
    "title_canon_sha256": "f4a01ad207374dfbc7bfe2ae499bae8c492abce127731f98a35e3a2cea31eb3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0513",
    "kind": "arxiv",
    "version": 4
  }
}