Pith Number

pith:XQOD5JGB

pith:2011:XQOD5JGBXBYT7DYECTZ6EWKSHX

not attested not anchored not stored refs pending

Do Fermi-LAT observations really imply very large Lorentz factors in GRB outflows ?

2), 2) ((1) UPMC Univ Paris 06, F. Daigne (1, Institut d'Astrophysique de Paris (2) CNRS, R. Hasco\"et (1, R. Mochkovitch (1, UMR 7095, UMR 7095), V. Vennin (1

arxiv:1101.3889 v2 · 2011-01-20 · 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{XQOD5JGBXBYT7DYECTZ6EWKSHX}

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	2026-05-18T02:03:26.066635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc1c3ea4c1b8713f8f0414f3e259523dfbaad30ddce46d6e620b1a01bd242312

Aliases

arxiv: 1101.3889 · arxiv_version: 1101.3889v2 · doi: 10.48550/arxiv.1101.3889 · pith_short_12: XQOD5JGBXBYT · pith_short_16: XQOD5JGBXBYT7DYE · pith_short_8: XQOD5JGB

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/XQOD5JGBXBYT7DYECTZ6EWKSHX \
  | 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: bc1c3ea4c1b8713f8f0414f3e259523dfbaad30ddce46d6e620b1a01bd242312

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30f1fa6b9ac10ad97230a5ec839e3b63637408368e92b656d83eeec4f424f612",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-01-20T13:00:23Z",
    "title_canon_sha256": "d364816d50af4810546a41d4c205fe938679e16093cab42ff01a1adfb6a04212"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.3889",
    "kind": "arxiv",
    "version": 2
  }
}