Pith Number

pith:HFVF4GZU

pith:2018:HFVF4GZUJXAGRH24KPNFC5AY66

not attested not anchored not stored refs pending

Finding Black Holes with Black Boxes -- Using Machine Learning to Identify Globular Clusters with Black Hole Subsystems

Abbas Askar, Ammar Askar, Mario Pasquato, Mirek Giersz

arxiv:1811.06473 v2 · 2018-11-15 · astro-ph.GA · astro-ph.HE · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HFVF4GZUJXAGRH24KPNFC5AY66}

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	2026-05-17T23:51:30.856672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

396a5e1b344dc0689f5c53da517418f7a440b7a4136aaf9ecd8a49d54a64b805

Aliases

arxiv: 1811.06473 · arxiv_version: 1811.06473v2 · doi: 10.48550/arxiv.1811.06473 · pith_short_12: HFVF4GZUJXAG · pith_short_16: HFVF4GZUJXAGRH24 · pith_short_8: HFVF4GZU

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/HFVF4GZUJXAGRH24KPNFC5AY66 \
  | 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: 396a5e1b344dc0689f5c53da517418f7a440b7a4136aaf9ecd8a49d54a64b805

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40929b02dcad7b703fd0b59c8537f6f425a4ec0152c9d7dfe9a63d20424648a2",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "astro-ph.IM",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-11-15T17:06:05Z",
    "title_canon_sha256": "117d1803f5936a9b58617736a5ffdf0f4a3a0d99f77060f45e98a6283593efa0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.06473",
    "kind": "arxiv",
    "version": 2
  }
}