Pith Number

pith:NPXBH7KE

pith:2002:NPXBH7KEHX3EQWD6N2KOMN7Q2N

not attested not anchored not stored refs pending

The Westerbork HI Survey of Spiral and Irregular Galaxies I. HI Imaging of Late-type Dwarf Galaxies

J.M. van der Hulst, R.A. Swaters, R. Sancisi, T.S. van Albada

arxiv:astro-ph/0204525 v1 · 2002-04-30 · 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{NPXBH7KEHX3EQWD6N2KOMN7Q2N}

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.

Cited by

1 paper in Pith

Investigating the Spectral Properties of Dual Nuclei in Galaxy Mergers from the GOTHIC survey: Supermassive Black Hole Growth, metal enrichment and Dual AGN

Receipt and verification

First computed	2026-07-04T16:29:56.989178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bee13fd443df648587e6e94e637f0d3462a3ad3cc0173a0d88e9d5315cd3f3b

Aliases

arxiv: astro-ph/0204525 · arxiv_version: astro-ph/0204525v1 · doi: 10.48550/arxiv.astro-ph/0204525 · pith_short_12: NPXBH7KEHX3E · pith_short_16: NPXBH7KEHX3EQWD6 · pith_short_8: NPXBH7KE

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/NPXBH7KEHX3EQWD6N2KOMN7Q2N \
  | 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: 6bee13fd443df648587e6e94e637f0d3462a3ad3cc0173a0d88e9d5315cd3f3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3db97edc8bdea1725481617dad395376f799fc58bcdc835593db921fb35a7893",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-30T19:24:00Z",
    "title_canon_sha256": "fb5e0a40fb0e8d0d1042e4f6c48705a48eb836377f4f64f4073e14545a6c35ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204525",
    "kind": "arxiv",
    "version": 1
  }
}