Pith Number

pith:MZC5AGDI

pith:1998:MZC5AGDIDYR3Y5I2BDBGTVY5YO

not attested not anchored not stored refs pending

Chemically Decoupled Nuclei in the Spiral Galaxies NGC 4216 and NGC 4501

A. N. Burenkov, O. K. Sil'chenko, V. V. Vlasyuk

arxiv:astro-ph/9812439 v1 · 1998-12-23 · 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{MZC5AGDIDYR3Y5I2BDBGTVY5YO}

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	2026-05-18T01:07:36.703671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6645d018681e23bc751a08c269d71dc3817d2245604392a838316b100ba2029b

Aliases

arxiv: astro-ph/9812439 · arxiv_version: astro-ph/9812439v1 · doi: 10.48550/arxiv.astro-ph/9812439 · pith_short_12: MZC5AGDIDYR3 · pith_short_16: MZC5AGDIDYR3Y5I2 · pith_short_8: MZC5AGDI

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/MZC5AGDIDYR3Y5I2BDBGTVY5YO \
  | 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: 6645d018681e23bc751a08c269d71dc3817d2245604392a838316b100ba2029b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33c00953d40730d2834587cf0707b980107bf9d65e3783f7b633b5f1a75ab3e7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-12-23T15:54:37Z",
    "title_canon_sha256": "fd91d4884633ddbfae8bde2091c3f4681ee088ae33e9b55ae3582b4d54ee8812"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9812439",
    "kind": "arxiv",
    "version": 1
  }
}