Pith Number

pith:BA2ZROGN

pith:2012:BA2ZROGNXJ6V5UD4CG53V65FUV

not attested not anchored not stored refs pending

Polycyclic Aromatic Hydrocarbon in the Central Region of the Seyfert 2 Galaxy NGC1808

Claudia Winge, Dinalva A. Sales, M. G. Pastoriza, R. Riffel

arxiv:1212.1357 v2 · 2012-12-06 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BA2ZROGNXJ6V5UD4CG53V65FUV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:52:46.960700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

083598b8cdba7d5ed07c11bbbafba5a5503b8b1823d757242e419d3de1aaeb72

Aliases

arxiv: 1212.1357 · arxiv_version: 1212.1357v2 · doi: 10.48550/arxiv.1212.1357 · pith_short_12: BA2ZROGNXJ6V · pith_short_16: BA2ZROGNXJ6V5UD4 · pith_short_8: BA2ZROGN

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/BA2ZROGNXJ6V5UD4CG53V65FUV \
  | 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: 083598b8cdba7d5ed07c11bbbafba5a5503b8b1823d757242e419d3de1aaeb72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "742e6215b967a3aa3c8aa40b7d665f168a9ed047cf3df2dea1450e0e50beaaed",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-12-06T15:50:13Z",
    "title_canon_sha256": "4f3bb404d9ba0a4a721900ce8deee0e049bd230ef7a6f40d634a34981f5982b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.1357",
    "kind": "arxiv",
    "version": 2
  }
}