Pith Number

pith:NYVNYUSJ

pith:1999:NYVNYUSJM6F5ZSZO4T5YKWCZ3J

not attested not anchored not stored refs pending

Neural Nets and Star/Galaxy Separation in Wide Field Astronomical Images

G. Gargiulo, G. Longo, N. Capuano, R. Tagliaferri, S. Andreon

arxiv:astro-ph/9906099 v1 · 1999-06-07 · 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{NYVNYUSJM6F5ZSZO4T5YKWCZ3J}

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	2026-05-18T00:58:09.100267Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e2adc5249678bdccb2ee4fb855859da6f0902f6ed1d147bce54a4c3e347f674

Aliases

arxiv: astro-ph/9906099 · arxiv_version: astro-ph/9906099v1 · doi: 10.48550/arxiv.astro-ph/9906099 · pith_short_12: NYVNYUSJM6F5 · pith_short_16: NYVNYUSJM6F5ZSZO · pith_short_8: NYVNYUSJ

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/NYVNYUSJM6F5ZSZO4T5YKWCZ3J \
  | 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: 6e2adc5249678bdccb2ee4fb855859da6f0902f6ed1d147bce54a4c3e347f674

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "179de2a4f4e7b135d4956d669b95b95c54f6d24f1d88b16fa75b64e57f8e59e5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-06-07T10:07:30Z",
    "title_canon_sha256": "88f40c8ce8ca217359848a8aafc5b5f9728d995ae708c5dc4d2bc50cb49d4668"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9906099",
    "kind": "arxiv",
    "version": 1
  }
}