Pith Number

pith:6CN5XYCC

pith:1994:6CN5XYCC2DIJG4LHYBTIZESYKF

not attested not anchored not stored refs pending

Origin of Quasar Progenitors from the Collapse of Low-Spin Cosmological Perturbations

Abraham Loeb (Harvard Univ.), Daniel J. Eisenstein

arxiv:astro-ph/9401016 v2 · 1994-01-11 · 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{6CN5XYCC2DIJG4LHYBTIZESYKF}

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

2 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

Receipt and verification

First computed	2026-07-04T15:50:36.637070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f09bdbe042d0d0937167c0668c9258517988113cf9f91ab9c1f043a099b33de1

Aliases

arxiv: astro-ph/9401016 · arxiv_version: astro-ph/9401016v2 · doi: 10.48550/arxiv.astro-ph/9401016 · pith_short_12: 6CN5XYCC2DIJ · pith_short_16: 6CN5XYCC2DIJG4LH · pith_short_8: 6CN5XYCC

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/6CN5XYCC2DIJG4LHYBTIZESYKF \
  | 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: f09bdbe042d0d0937167c0668c9258517988113cf9f91ab9c1f043a099b33de1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8a92d23ce560f03e6243a0cd59470f7b5496152e5e572fb5df35f4ac492aefd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-01-11T18:56:30Z",
    "title_canon_sha256": "6818aefe717a6797ebb9c8256d89a6c44f6fd8f48120dd501a0bcc51074b91b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9401016",
    "kind": "arxiv",
    "version": 2
  }
}