Pith Number

pith:44BNQ2TK

pith:2011:44BNQ2TKVQAYIBPN2KLEIWV2PL

not attested not anchored not stored refs pending

Physical Structure of the Planetary Nebula NGC 3242 from the Hot Bubble to the Nebular Envelope

(2) Astronomy Department, CSIC, Granada, Martin A. Guerrero (1), Nieves Ruiz (1), Robert A. Gruendl (2) ((1) Instituto de Astrofisica de Andalucia, Spain, University of Illinois at Urbana-Champaign), You-Hua Chu (2)

arxiv:1107.4207 v1 · 2011-07-21 · 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{44BNQ2TKVQAYIBPN2KLEIWV2PL}

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	2026-05-18T02:01:13.793638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e702d86a6aac018405edd296445aba7af0999708f7fa291ec43874ad81303f1a

Aliases

arxiv: 1107.4207 · arxiv_version: 1107.4207v1 · doi: 10.48550/arxiv.1107.4207 · pith_short_12: 44BNQ2TKVQAY · pith_short_16: 44BNQ2TKVQAYIBPN · pith_short_8: 44BNQ2TK

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/44BNQ2TKVQAYIBPN2KLEIWV2PL \
  | 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: e702d86a6aac018405edd296445aba7af0999708f7fa291ec43874ad81303f1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c40f9c0546895a892f55b1611de7a16e9f10a23ddd3515ddb56ddc10f42ae30",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-07-21T09:17:15Z",
    "title_canon_sha256": "82695199d8b58a6d54fc71dd560040fec676d0dc21cbfec351ab3a9cdfee4faa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4207",
    "kind": "arxiv",
    "version": 1
  }
}