Pith Number

pith:LH4SGS6F

pith:1999:LH4SGS6FVF27O4255BSHIVGGKS

not attested not anchored not stored refs pending

Deep CCD Surface Photometry of the Edge-On Spiral NGC 4244

Anne M. Fry, Heather L. Morrison, Paul Harding, Todd A. Boroson

arxiv:astro-ph/9906019 v1 · 1999-06-01 · 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{LH4SGS6FVF27O4255BSHIVGGKS}

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	2026-05-18T01:07:36.383569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59f9234bc5a975f7735de8647454c654b3f9ca9fab50b1ccb08475293cbd715b

Aliases

arxiv: astro-ph/9906019 · arxiv_version: astro-ph/9906019v1 · doi: 10.48550/arxiv.astro-ph/9906019 · pith_short_12: LH4SGS6FVF27 · pith_short_16: LH4SGS6FVF27O425 · pith_short_8: LH4SGS6F

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/LH4SGS6FVF27O4255BSHIVGGKS \
  | 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: 59f9234bc5a975f7735de8647454c654b3f9ca9fab50b1ccb08475293cbd715b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12503986f46acd39c4f64a482a0c88d04180137852195b3e8fc6793168a72a5c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-06-01T19:47:13Z",
    "title_canon_sha256": "de3319ff8edf750688a59421ba55d84e1270b56ee45a41321785b3ad0085b634"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9906019",
    "kind": "arxiv",
    "version": 1
  }
}