Pith Number

pith:MLD2JI5W

pith:2011:MLD2JI5WBJVXTBQGJZPVNBBEQW

not attested not anchored not stored refs pending

Is there a black hole in NGC 4382?

Douglas O. Richstone, Jason Pinkney, John Kormendy, Karl Gebhardt, Kayhan Gultekin, Ralf Bender, S. M. Faber, Tod R. Lauer

arxiv:1108.1808 v1 · 2011-08-08 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MLD2JI5WBJVXTBQGJZPVNBBEQW}

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	2026-05-18T02:01:00.096063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62c7a4a3b60a6b7986064e5f56842485a1305611e7daa4573644af80b218e829

Aliases

arxiv: 1108.1808 · arxiv_version: 1108.1808v1 · doi: 10.48550/arxiv.1108.1808 · pith_short_12: MLD2JI5WBJVX · pith_short_16: MLD2JI5WBJVXTBQG · pith_short_8: MLD2JI5W

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/MLD2JI5WBJVXTBQGJZPVNBBEQW \
  | 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: 62c7a4a3b60a6b7986064e5f56842485a1305611e7daa4573644af80b218e829

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8b5f1be18969f047ab52b814ad808cbc8b5c0e9e62326afebcaee32a5712745",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-08T20:12:10Z",
    "title_canon_sha256": "121b466b4ff07e1203664b4cc63a9f85ee5d2e0633c0a06f02244e730525612d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1808",
    "kind": "arxiv",
    "version": 1
  }
}