Pith Number

pith:IBLXBCGV

pith:1994:IBLXBCGVH6AP45WHEJSHYI2DZL

not attested not anchored not stored refs pending

Collapse of Primordial Gas Clouds and the Formation of Quasar Black Holes

A. Loeb, F. A. Rasio

arxiv:astro-ph/9401026 v1 · 1994-01-16 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IBLXBCGVH6AP45WHEJSHYI2DZL}

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

4 papers in Pith

Too shy to spin? Cosmic wallflowers as proto-globular clusters

Ultraviolet diversity of Little Red Dots as a probe for direct-collapse black hole ages

TDEs on FIRE: Illuminating the Cosmic Evolution of Tidal Disruption Rates

Direct Collapse Black Hole Candidates from Decaying Dark Matter

Receipt and verification

First computed	2026-07-04T15:56:02.950776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40577088d53f80fe76c722647c2343caec4a7487c79652ae0641d0ddf5704583

Aliases

arxiv: astro-ph/9401026 · arxiv_version: astro-ph/9401026v1 · doi: 10.48550/arxiv.astro-ph/9401026 · pith_short_12: IBLXBCGVH6AP · pith_short_16: IBLXBCGVH6AP45WH · pith_short_8: IBLXBCGV

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/IBLXBCGVH6AP45WHEJSHYI2DZL \
  | 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: 40577088d53f80fe76c722647c2343caec4a7487c79652ae0641d0ddf5704583

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0d6f97428f2c41bd283839944a3dc10e2c044e33276c876ce34a115ea0d0b27",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-01-16T19:29:14Z",
    "title_canon_sha256": "48538b6ad3cd0e5cd809067de450fbf90610cdbbb91d7211f5ea520aec4cbe2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9401026",
    "kind": "arxiv",
    "version": 1
  }
}