Pith Number

pith:4WRJHOJ2

pith:2013:4WRJHOJ2PKP26HNL3RZSTV3MD7

not attested not anchored not stored refs pending

The Black Hole and Central Stellar Population of MCG--6-30-15

A. C. Fabian, P. Gandhi, R. E. A Canning, R. I. Davies, S. I. Raimundo, V. D. Ivanov

arxiv:1302.5116 v1 · 2013-02-20 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4WRJHOJ2PKP26HNL3RZSTV3MD7}

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	2026-05-18T01:51:34.745335Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5a293b93a7a9faf1dabdc7329d76c1fe3739be65ecd7621284f49c3666c9f73

Aliases

arxiv: 1302.5116 · arxiv_version: 1302.5116v1 · doi: 10.48550/arxiv.1302.5116 · pith_short_12: 4WRJHOJ2PKP2 · pith_short_16: 4WRJHOJ2PKP26HNL · pith_short_8: 4WRJHOJ2

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/4WRJHOJ2PKP26HNL3RZSTV3MD7 \
  | 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: e5a293b93a7a9faf1dabdc7329d76c1fe3739be65ecd7621284f49c3666c9f73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "088bc004ee07eb4f7e97d19b4865adb0ac16fe7d75f4bdfb985d7d569f4284e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-20T21:01:09Z",
    "title_canon_sha256": "ae23e480714830d6ff78b58019057982012803622e23f1807c651d892d0f8b4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5116",
    "kind": "arxiv",
    "version": 1
  }
}