Pith Number

pith:QHLXL5TG

pith:2021:QHLXL5TG73KXUKIUEDWJUG3K6K

not attested not anchored not stored refs pending

Multiple accelerated particle populations in the Cygnus Loop with Fermi-LAT

A. D'A\`i, A. Tutone, F. Acero, G. Cusumano, J. Ballet

arxiv:2109.15238 v2 · 2021-09-30 · 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{QHLXL5TG73KXUKIUEDWJUG3K6K}

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	2026-07-05T03:40:48.459409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81d775f666fed57a291420ec9a1b6af29fc473f393fb0f73a3ed9e8c73a90ea5

Aliases

arxiv: 2109.15238 · arxiv_version: 2109.15238v2 · doi: 10.48550/arxiv.2109.15238 · pith_short_12: QHLXL5TG73KX · pith_short_16: QHLXL5TG73KXUKIU · pith_short_8: QHLXL5TG

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/QHLXL5TG73KXUKIUEDWJUG3K6K \
  | 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: 81d775f666fed57a291420ec9a1b6af29fc473f393fb0f73a3ed9e8c73a90ea5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6dc77b45423fba37747188fce004681ca3bba9e3813bebcadf37e98283d351ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-09-30T16:17:01Z",
    "title_canon_sha256": "31a27570e13ec771824c1921845352992ceae5d29981aaa0acb99f8b1e6ad2e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.15238",
    "kind": "arxiv",
    "version": 2
  }
}