Pith Number

pith:J23KXMBU

pith:2004:J23KXMBUZNZ2P4TZUV6U4JLLDA

not attested not anchored not stored refs pending

The PNLF distance to the Sculptor Group galaxy NGC 55

C. Praet, G. C. Van de Steene, G. H. Jacoby, H. Dejonghe, R. Ciardullo

arxiv:astro-ph/0407348 v2 · 2004-07-16 · 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{J23KXMBUZNZ2P4TZUV6U4JLLDA}

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	2026-07-04T14:13:40.124264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4eb6abb034cb73a7f279a57d4e256b181a8df269b8e40391cabcc7337e220d42

Aliases

arxiv: astro-ph/0407348 · arxiv_version: astro-ph/0407348v2 · doi: 10.48550/arxiv.astro-ph/0407348 · pith_short_12: J23KXMBUZNZ2 · pith_short_16: J23KXMBUZNZ2P4TZ · pith_short_8: J23KXMBU

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/J23KXMBUZNZ2P4TZUV6U4JLLDA \
  | 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: 4eb6abb034cb73a7f279a57d4e256b181a8df269b8e40391cabcc7337e220d42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2f9d72e7dc646b1335cbdd83989a0e9ab0df9b0c757ee926ad173a2ac2d3737",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-07-16T14:18:26Z",
    "title_canon_sha256": "90ab23a8cfa3996fa7ac2b976977e96a09157a8f88eb730102cc25f60da706fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0407348",
    "kind": "arxiv",
    "version": 2
  }
}