Pith Number

pith:YLPD4JPZ

pith:2003:YLPD4JPZTC6LVG3XPG4FQPPOW3

not attested not anchored not stored refs pending

A Low-Mass Central Black Hole in the Bulgeless Seyfert 1 Galaxy NGC 4395

Alexei V. Filippenko (U. C. Berkeley), Luis C. Ho (Carnegie Observatories)

arxiv:astro-ph/0303429 v1 · 2003-03-19 · 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{YLPD4JPZTC6LVG3XPG4FQPPOW3}

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.

Cited by

1 paper in Pith

Unification models of Active Galactic Nuclei

Receipt and verification

First computed	2026-07-04T17:25:12.124778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2de3e25f998bcba9b7779b8583deeb6debe307da3cb68d0b6795c0d16498a82

Aliases

arxiv: astro-ph/0303429 · arxiv_version: astro-ph/0303429v1 · doi: 10.48550/arxiv.astro-ph/0303429 · pith_short_12: YLPD4JPZTC6L · pith_short_16: YLPD4JPZTC6LVG3X · pith_short_8: YLPD4JPZ

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/YLPD4JPZTC6LVG3XPG4FQPPOW3 \
  | 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: c2de3e25f998bcba9b7779b8583deeb6debe307da3cb68d0b6795c0d16498a82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "294ef7fe7cb22f9525baa0f0e61914804f5b2252aebad5aaa5576b47b2f3fa17",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-03-19T00:09:14Z",
    "title_canon_sha256": "b03fb4398ff0d13c6069e2cb97104a2a65a9d4e99cf361524a1ca5853aa7cb3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0303429",
    "kind": "arxiv",
    "version": 1
  }
}