Pith Number

pith:DQXBVKHM

pith:1999:DQXBVKHMQKVC7BTWNIAJ46QWTJ

not attested not anchored not stored refs pending

Forming the First Stars in the Universe: The Fragmentation of Primordial Gas

Paolo S. Coppi, Richard B. Larson, Volker Bromm

arxiv:astro-ph/9910224 v1 · 1999-10-13 · 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{DQXBVKHMQKVC7BTWNIAJ46QWTJ}

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

A Pixel-by-Pixel Path to Population III Discovery with JWST

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

Receipt and verification

First computed	2026-07-04T16:11:42.181365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c2e1aa8ec82aa2f86766a009e7a169a76758a208ce7ddcba17ae492d8081c54

Aliases

arxiv: astro-ph/9910224 · arxiv_version: astro-ph/9910224v1 · doi: 10.48550/arxiv.astro-ph/9910224 · pith_short_12: DQXBVKHMQKVC · pith_short_16: DQXBVKHMQKVC7BTW · pith_short_8: DQXBVKHM

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/DQXBVKHMQKVC7BTWNIAJ46QWTJ \
  | 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: 1c2e1aa8ec82aa2f86766a009e7a169a76758a208ce7ddcba17ae492d8081c54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fc3f083abb7acb29bb73ed59e23c4171e157caeb9b65a7bf82caffa07028e42",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-10-13T02:18:31Z",
    "title_canon_sha256": "339df99dc23c25ce8e34af071e5ad226fa9e0c5228911e00c432e33d8f10064f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9910224",
    "kind": "arxiv",
    "version": 1
  }
}