Pith Number

pith:MM223SKE

pith:2019:MM223SKEJBS76MERZJCWEWJ2LG

not attested not anchored not stored refs pending

Characterizing the Gamma-Ray Variability of the Brightest Flat Spectrum Radio Quasars Observed with the Fermi LAT

Jeffrey D. Scargle, Manuel Meyer, Roger D. Blandford

arxiv:1902.02291 v4 · 2019-02-06 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MM223SKEJBS76MERZJCWEWJ2LG}

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.

Cited by

1 paper in Pith

The large gamma-ray flare of the FSRQ PKS 0346-27

Receipt and verification

First computed	2026-07-05T00:37:16.095004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6335adc9444865ff3091ca4562593a5990c9972b7580d4c5544e630a250d8c61

Aliases

arxiv: 1902.02291 · arxiv_version: 1902.02291v4 · doi: 10.48550/arxiv.1902.02291 · pith_short_12: MM223SKEJBS7 · pith_short_16: MM223SKEJBS76MER · pith_short_8: MM223SKE

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/MM223SKEJBS76MERZJCWEWJ2LG \
  | 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: 6335adc9444865ff3091ca4562593a5990c9972b7580d4c5544e630a250d8c61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "178a109916c4b62cf4aaecc0cbdb26159316dd431c1ed0bae7c150994d0ca045",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-02-06T17:36:59Z",
    "title_canon_sha256": "226b776253f670594abd307a8d8ecbce3140886ffcdae5944f9f9ac6686b81b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.02291",
    "kind": "arxiv",
    "version": 4
  }
}