Pith Number

pith:GX7N2WKT

pith:2021:GX7N2WKTVZU5UOEFISGIJ3N5G5

not attested not anchored not stored refs pending

The first GeV flare of the radio-loud narrow-line Seyfert 1 galaxy PKS 2004-447

Andrea Gokus, Filippo D'Ammando, Jamie Stevens, J\"orn Wilms, Manuel Meyer, Matthias Kadler, Philip G. Edwards, Roopesh Ojha, Sara Buson, Sarah M. Wagner, Vaidehi S. Paliya

arxiv:2102.11633 v1 · 2021-02-23 · 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{GX7N2WKTVZU5UOEFISGIJ3N5G5}

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	2026-07-05T02:41:15.564211Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35fedd5953ae69da3885448c84edbd3753397f97e4be3d71e4fa152f55d3f214

Aliases

arxiv: 2102.11633 · arxiv_version: 2102.11633v1 · doi: 10.48550/arxiv.2102.11633 · pith_short_12: GX7N2WKTVZU5 · pith_short_16: GX7N2WKTVZU5UOEF · pith_short_8: GX7N2WKT

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/GX7N2WKTVZU5UOEFISGIJ3N5G5 \
  | 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: 35fedd5953ae69da3885448c84edbd3753397f97e4be3d71e4fa152f55d3f214

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "640b72fd6e7a97821745ff171a45871f83c8649de122d727350460e7f08cf608",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-02-23T11:18:23Z",
    "title_canon_sha256": "4680fcd891b976a84ff005e1d7b1a8187c9127f5a854345065498ae00c96c2ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.11633",
    "kind": "arxiv",
    "version": 1
  }
}