Pith Number

pith:I4SPDVTW

pith:2016:I4SPDVTWZVZF35MIGR3Z42WCIG

not attested not anchored not stored refs pending

The origin of compact galaxies with anomalously high black hole masses

(2) ICC, (3) ARI, Christopher Barber (1), Durham, Joop Schaye (1), Liverpool John Moores), Matthieu Schaller (2), Richard G. Bower (2), Robert A. Crain (3), Tom Theuns (2) ((1) Leiden Observatory

arxiv:1602.04819 v3 · 2016-02-15 · 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{I4SPDVTWZVZF35MIGR3Z42WCIG}

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	2026-05-18T01:14:43.957820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4724f1d676cd725df58834779e6ac241bca098df81502db7cb993f0242686684

Aliases

arxiv: 1602.04819 · arxiv_version: 1602.04819v3 · doi: 10.48550/arxiv.1602.04819 · pith_short_12: I4SPDVTWZVZF · pith_short_16: I4SPDVTWZVZF35MI · pith_short_8: I4SPDVTW

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/I4SPDVTWZVZF35MIGR3Z42WCIG \
  | 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: 4724f1d676cd725df58834779e6ac241bca098df81502db7cb993f0242686684

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a52f5fbbc3f5068a459d169f9a117c206b34b11cbdd145806cfd06ba0d02d979",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-02-15T21:00:04Z",
    "title_canon_sha256": "48b9d8ecca3faaefc2b46529047d8d26a0fd9aacf70467b6f6b8b1734ef23870"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.04819",
    "kind": "arxiv",
    "version": 3
  }
}