Pith Number

pith:QNHQ2ZKZ

pith:2013:QNHQ2ZKZOAMDWFB3OKWMLQQX6Z

not attested not anchored not stored refs pending

Evidence for a cosmological effect in \gamma-ray spectra of BL Lacs

B. Giebels, D.A. Sanchez, S. Fegan

arxiv:1303.5923 v1 · 2013-03-24 · 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{QNHQ2ZKZOAMDWFB3OKWMLQQX6Z}

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	2026-05-18T03:21:53.646294Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

834f0d655970183b143b72acc5c217f65fe3bdd6456dac75b0ed600cc3f3e498

Aliases

arxiv: 1303.5923 · arxiv_version: 1303.5923v1 · doi: 10.48550/arxiv.1303.5923 · pith_short_12: QNHQ2ZKZOAMD · pith_short_16: QNHQ2ZKZOAMDWFB3 · pith_short_8: QNHQ2ZKZ

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/QNHQ2ZKZOAMDWFB3OKWMLQQX6Z \
  | 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: 834f0d655970183b143b72acc5c217f65fe3bdd6456dac75b0ed600cc3f3e498

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1baf19d2938605ab6802c2fdb0926de2d6a7f1407bcd6efa220ebd4f54da26ef",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-03-24T08:19:45Z",
    "title_canon_sha256": "e2e8aef7758e44c9a8946d4927e4532a2a303ef2c3cdb9c1b7ab7a7851bbe532"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.5923",
    "kind": "arxiv",
    "version": 1
  }
}