Pith Number

pith:VZZN7WY6

pith:2021:VZZN7WY6NALNOUA5G2NSM2MNN2

not attested not anchored not stored refs pending

The nuclear environment of NGC 2442: a Compton-thick low-luminosity AGN

E. L\'opez-Navas, J. E. Steiner, Patr\'icia da Silva, R. B. Menezes, Y. D\'iaz

arxiv:2105.09420 v2 · 2021-05-19 · 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{VZZN7WY6NALNOUA5G2NSM2MNN2}

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	2026-07-05T02:42:05.680172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae72dfdb1e6816d7501d369b26698d6eaf27ad9bbfda6f71be1ef509fd9cf1d9

Aliases

arxiv: 2105.09420 · arxiv_version: 2105.09420v2 · doi: 10.48550/arxiv.2105.09420 · pith_short_12: VZZN7WY6NALN · pith_short_16: VZZN7WY6NALNOUA5 · pith_short_8: VZZN7WY6

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/VZZN7WY6NALNOUA5G2NSM2MNN2 \
  | 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: ae72dfdb1e6816d7501d369b26698d6eaf27ad9bbfda6f71be1ef509fd9cf1d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ae88c10f62560885cb24a57db128404bf5205d42b808f18b6fcdd239ecf4433",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-05-19T22:14:16Z",
    "title_canon_sha256": "2b235a1d04db225c8956ec49f90ce3d33c05b30932b5a60750f4f6c9b474b5b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.09420",
    "kind": "arxiv",
    "version": 2
  }
}