Pith Number

pith:W4CUXLP4

pith:2008:W4CUXLP4BBX6KN5TFDOVQOLI5Z

not attested not anchored not stored refs pending

Protostar Formation in the Early Universe

Kazuyuki Omukai (NAOJ), Lars Hernquist (CfA-Harvard), Naoki Yoshida (Nagoya University)

arxiv:0807.4928 v2 · 2008-07-30 · 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{W4CUXLP4BBX6KN5TFDOVQOLI5Z}

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

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

Receipt and verification

First computed	2026-07-04T17:12:03.429204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7054badfc086fe537b328dd583968ee6394ab104052411b9cb29edc11fc9438

Aliases

arxiv: 0807.4928 · arxiv_version: 0807.4928v2 · doi: 10.48550/arxiv.0807.4928 · pith_short_12: W4CUXLP4BBX6 · pith_short_16: W4CUXLP4BBX6KN5T · pith_short_8: W4CUXLP4

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/W4CUXLP4BBX6KN5TFDOVQOLI5Z \
  | 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: b7054badfc086fe537b328dd583968ee6394ab104052411b9cb29edc11fc9438

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "351fd6b6007bae0373c8ca142dc0bb8a53f4907dd3ddd2ce36cfa41f9c9cd04f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-30T23:16:44Z",
    "title_canon_sha256": "ce7804a95dd5dca13929d0790b759a11fd6f3cc4c1623aa80edf4365a523ab83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.4928",
    "kind": "arxiv",
    "version": 2
  }
}