Pith Number

pith:JOHS4CE5

pith:2008:JOHS4CE5GROZ7USJTCQS6UKU4C

not attested not anchored not stored refs pending

A Stellar Dynamical Measurement of the Black Hole Mass in the Maser Galaxy NGC 4258

Alan Dressler, Alexei V. Filippenko, Christos Siopis, Douglas Richstone, Gary Bower, Jason Pinkney, John Kormendy, John Magorrian, Karl Gebhardt, Luis C. Ho, M. C. Aller, Ralf Bender, Richard Green, Scott Tremaine, S. M. Faber, Tod R. Lauer

arxiv:0808.4001 v1 · 2008-08-28 · 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{JOHS4CE5GROZ7USJTCQS6UKU4C}

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	2026-05-18T04:29:32.946192Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b8f2e089d345d9fd24998a12f5154e097b6ce3f4fc25921088058af128142b9

Aliases

arxiv: 0808.4001 · arxiv_version: 0808.4001v1 · doi: 10.48550/arxiv.0808.4001 · pith_short_12: JOHS4CE5GROZ · pith_short_16: JOHS4CE5GROZ7USJ · pith_short_8: JOHS4CE5

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/JOHS4CE5GROZ7USJTCQS6UKU4C \
  | 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: 4b8f2e089d345d9fd24998a12f5154e097b6ce3f4fc25921088058af128142b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "543d2513168b6e5becec5fe638b83d601bffb62fe90da35f08cc4fc80b1f47c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-08-28T21:25:02Z",
    "title_canon_sha256": "24c722c1c08aef69ed4e045f3bb8ed6a99dea18d05607def6edf5ce092efb7cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.4001",
    "kind": "arxiv",
    "version": 1
  }
}