Pith Number

pith:2PHJIQKO

pith:2013:2PHJIQKOKINQ4N4LNHTNRXO4ND

not attested not anchored not stored refs pending

On central black holes in ultra-compact dwarf galaxies

Holger Baumgardt, Matthias Frank, Michael Hilker, Nadine Neumayer, Nora Luetzgendorf, Steffen Mieske

arxiv:1308.1398 v1 · 2013-08-06 · 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{2PHJIQKOKINQ4N4LNHTNRXO4ND}

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	2026-05-18T01:48:23.026415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3ce94414e521b0e378b69e6d8dddc68e6c2d65d9fbbed3d0344fbb9ba8639d1

Aliases

arxiv: 1308.1398 · arxiv_version: 1308.1398v1 · doi: 10.48550/arxiv.1308.1398 · pith_short_12: 2PHJIQKOKINQ · pith_short_16: 2PHJIQKOKINQ4N4L · pith_short_8: 2PHJIQKO

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/2PHJIQKOKINQ4N4LNHTNRXO4ND \
  | 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: d3ce94414e521b0e378b69e6d8dddc68e6c2d65d9fbbed3d0344fbb9ba8639d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab7387ac6a2019061e5e16d5b64ad46b3ed69b8b85cc960c0b44266388a0407a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-06T20:00:01Z",
    "title_canon_sha256": "69e4a722f6bbf7cf50220163d95b4d3d5df355e802a41ce2fd61a4e2e8077bdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.1398",
    "kind": "arxiv",
    "version": 1
  }
}