Pith Number

pith:BF2V4AUI

pith:2014:BF2V4AUIMXGJZGCLJ3D74JLA27

not attested not anchored not stored refs pending

The giant HII region NGC 588 as a benchmark for 2D photoionisation models

Ana Monreal-Ibero, Carolina Kehrig, Christophe Morisset, Enrique Perez-Montero, Jose M. Vilchez, Monica Relano

arxiv:1404.2217 v2 · 2014-04-08 · 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{BF2V4AUIMXGJZGCLJ3D74JLA27}

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	2026-05-18T02:50:33.571569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09755e028865cc9c984b4ec7fe2560d7c7eca26ca461a3196ffca74259d45c90

Aliases

arxiv: 1404.2217 · arxiv_version: 1404.2217v2 · doi: 10.48550/arxiv.1404.2217 · pith_short_12: BF2V4AUIMXGJ · pith_short_16: BF2V4AUIMXGJZGCL · pith_short_8: BF2V4AUI

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/BF2V4AUIMXGJZGCLJ3D74JLA27 \
  | 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: 09755e028865cc9c984b4ec7fe2560d7c7eca26ca461a3196ffca74259d45c90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0a0dd56e929a32ed4a75a2187c5b700ce518b3ac95e9bd5156344f5cd5b22b5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-04-08T17:13:49Z",
    "title_canon_sha256": "bfc1977913ab5361a169368c2739e2b23b9b627b29646a4f1fe3473712bca71a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.2217",
    "kind": "arxiv",
    "version": 2
  }
}