Pith Number

pith:ZLMGBGZ3

pith:1996:ZLMGBGZ3UH3UWBALFSO7CZABSV

not attested not anchored not stored refs pending

An Artificial Neural Network Approach to Classification of Galaxy Spectra

O. Lahav, S.J. Maddox, S.R. Folkes

arxiv:astro-ph/9608073 v1 · 1996-08-13 · 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{ZLMGBGZ3UH3UWBALFSO7CZABSV}

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	2026-05-18T01:40:19.595452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cad8609b3ba1f74b040b2c9df16401955f6de5b026cd2c9ed9f5b4d5b74f0845

Aliases

arxiv: astro-ph/9608073 · arxiv_version: astro-ph/9608073v1 · doi: 10.48550/arxiv.astro-ph/9608073 · pith_short_12: ZLMGBGZ3UH3U · pith_short_16: ZLMGBGZ3UH3UWBAL · pith_short_8: ZLMGBGZ3

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/ZLMGBGZ3UH3UWBALFSO7CZABSV \
  | 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: cad8609b3ba1f74b040b2c9df16401955f6de5b026cd2c9ed9f5b4d5b74f0845

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3546869a85dbe14b46b52ac1e1011722a46df52c9db56806c49f87b528eae12e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-08-13T22:17:51Z",
    "title_canon_sha256": "49531bf8192e561db5ede0907c4308244c7f7a90f3105cc7681986441500684c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9608073",
    "kind": "arxiv",
    "version": 1
  }
}