Pith Number

pith:FBT6RN6A

pith:2010:FBT6RN6A7JKTJAZAVMDME2KWCM

not attested not anchored not stored refs pending

Quasistars and the cosmic evolution of massive black holes

Marta Volonteri, Mitchell C. Begelman

arxiv:1003.5220 v2 · 2010-03-26 · astro-ph.HE · 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{FBT6RN6A7JKTJAZAVMDME2KWCM}

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.

Cited by

1 paper in Pith

A "Black Hole Star" Reveals the Remarkable Gas-Enshrouded Hearts of the Little Red Dots

Receipt and verification

First computed	2026-05-18T02:08:16.603566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2867e8b7c0fa55348320ab06c2695613116c13460d5a145bcd05e40e3e949b15

Aliases

arxiv: 1003.5220 · arxiv_version: 1003.5220v2 · doi: 10.48550/arxiv.1003.5220 · pith_short_12: FBT6RN6A7JKT · pith_short_16: FBT6RN6A7JKTJAZA · pith_short_8: FBT6RN6A

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/FBT6RN6A7JKTJAZAVMDME2KWCM \
  | 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: 2867e8b7c0fa55348320ab06c2695613116c13460d5a145bcd05e40e3e949b15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "848498262137a83c3ad269382b592cccd45eb37dc205df2cb00752e5f463c9a5",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-03-26T20:10:12Z",
    "title_canon_sha256": "54d18ee8c6875f397040917cd2fa3f74ada782557c23038ea735a3f4e1fdf32c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.5220",
    "kind": "arxiv",
    "version": 2
  }
}