Pith Number

pith:WZVG5ZEF

pith:1997:WZVG5ZEFAKC3MGIXUQNQF2IMQ6

not attested not anchored not stored refs pending

Measuring non-axisymmetry in spiral galaxies

(2) Sterrewacht Leiden, Groningen, Leiden, M. Franx (1), P. T. de Zeeuw (2) ((1) Kapteyn Astronomical Institute, R. H. M. Schoenmakers (1), the Netherlands), The Netherlands

arxiv:astro-ph/9707332 v1 · 1997-07-30 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WZVG5ZEFAKC3MGIXUQNQF2IMQ6}

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	2026-05-18T01:40:16.940564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b66a6ee4850285b61917a41b02e90c879ac222ef622d737c83c675e04f5e2512

Aliases

arxiv: astro-ph/9707332 · arxiv_version: astro-ph/9707332v1 · doi: 10.48550/arxiv.astro-ph/9707332 · pith_short_12: WZVG5ZEFAKC3 · pith_short_16: WZVG5ZEFAKC3MGIX · pith_short_8: WZVG5ZEF

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/WZVG5ZEFAKC3MGIXUQNQF2IMQ6 \
  | 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: b66a6ee4850285b61917a41b02e90c879ac222ef622d737c83c675e04f5e2512

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "380db1e4c04f0701015d7e6a0a8b9abec1f125b4292deca47f2d61f7dc8e19f0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-30T12:21:19Z",
    "title_canon_sha256": "aac36456e3dd2d33e62ec193463672df84dad63596f9697afd59f52e0bd59f01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707332",
    "kind": "arxiv",
    "version": 1
  }
}