Pith Number

pith:JFULDUIZ

pith:2018:JFULDUIZUOTV5YHPFCCUV25A4G

not attested not anchored not stored refs pending

Extraplanar H II Regions in Spiral Galaxies. II. In Situ Star Formation in the Interstellar Thick Disk of NGC 4013

Blair D. Savage, Christopher B. Wotta, J. Christopher Howk, Katherine M. Rueff, Kevin Croxall, Nicolas Lehner

arxiv:1802.10166 v1 · 2018-02-27 · 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{JFULDUIZUOTV5YHPFCCUV25A4G}

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	2026-05-18T00:17:38.573643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4968b1d119a3a75ee0ef28854aeba0e18320fdf0571d9969fd5c2ee5523e3365

Aliases

arxiv: 1802.10166 · arxiv_version: 1802.10166v1 · doi: 10.48550/arxiv.1802.10166 · pith_short_12: JFULDUIZUOTV · pith_short_16: JFULDUIZUOTV5YHP · pith_short_8: JFULDUIZ

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/JFULDUIZUOTV5YHPFCCUV25A4G \
  | 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: 4968b1d119a3a75ee0ef28854aeba0e18320fdf0571d9969fd5c2ee5523e3365

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e42d931edde5e6efa279075413d097a49ef16b45cde89d82c9988b8ba961f576",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-27T21:10:27Z",
    "title_canon_sha256": "0981afa28b0018d79975adc8d6e5fdc4389fa6c14c42d3596a10050e8bffcaed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.10166",
    "kind": "arxiv",
    "version": 1
  }
}