Pith Number

pith:WUIKP7RB

pith:2010:WUIKP7RBZYAZ3TGKOPIHK7XPQS

not attested not anchored not stored refs pending

The NGC 404 Nucleus: Star Cluster and Possible Intermediate Mass Black Hole

Andrew Stephens, Anil C. Seth, Knut Olsen, Michele Cappellari, Nadine Neumayer, Nate Bastian, Nelson Caldwell, Richard McDermid, Robert D. Blum, Thomas Puzia, Victor P. Debattista

arxiv:1003.0680 v1 · 2010-03-03 · 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{WUIKP7RBZYAZ3TGKOPIHK7XPQS}

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	2026-05-18T02:08:47.327375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b510a7fe21ce019dccca73d0757eef84a54f99d6dd6ddb534bd4d8ef258f6149

Aliases

arxiv: 1003.0680 · arxiv_version: 1003.0680v1 · doi: 10.48550/arxiv.1003.0680 · pith_short_12: WUIKP7RBZYAZ · pith_short_16: WUIKP7RBZYAZ3TGK · pith_short_8: WUIKP7RB

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/WUIKP7RBZYAZ3TGKOPIHK7XPQS \
  | 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: b510a7fe21ce019dccca73d0757eef84a54f99d6dd6ddb534bd4d8ef258f6149

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9aec26b0f3e2ed5105994ebfa93e31adffbc0e3c129721a9d35ad688a486be5",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-03T15:33:55Z",
    "title_canon_sha256": "8b33524bd1d745111ee48a3354c9cd0c68e45d9e5bdce6c6c0d541f584b6cac4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.0680",
    "kind": "arxiv",
    "version": 1
  }
}