Pith Number

pith:GRK7TXYV

pith:2019:GRK7TXYV6PAVAPXCQEUVY4WYYF

not attested not anchored not stored refs pending

Slow and fat: low-spin SMBHs are more massive

Andrew R. King, Kastytis Zubovas

arxiv:1908.02630 v1 · 2019-08-07 · 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{GRK7TXYV6PAVAPXCQEUVY4WYYF}

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	2026-07-04T23:52:11.000599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3455f9df15f3c1503ee281295c72d8c16f2e77848d8d14cda9e92994f054dcb9

Aliases

arxiv: 1908.02630 · arxiv_version: 1908.02630v1 · doi: 10.48550/arxiv.1908.02630 · pith_short_12: GRK7TXYV6PAV · pith_short_16: GRK7TXYV6PAVAPXC · pith_short_8: GRK7TXYV

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/GRK7TXYV6PAVAPXCQEUVY4WYYF \
  | 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: 3455f9df15f3c1503ee281295c72d8c16f2e77848d8d14cda9e92994f054dcb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a506d05f6b54bc10915981d373d940dd7b813c1ee39c861c53ec7dd0ea6518d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-07T13:37:39Z",
    "title_canon_sha256": "1251c766e075f235e0cbc5365e611389096c2613a385937fd502408c88ee1aac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02630",
    "kind": "arxiv",
    "version": 1
  }
}