Pith Number

pith:6RHU7QAB

pith:1998:6RHU7QABB5WSTEAJ73QQWDGDAK

not attested not anchored not stored refs pending

Do Small-Scale Dark Matter Fluctuations Govern the Fragmentation of Primordial Gas?

Paolo Coppi, Richard Larson, Volker Bromm

arxiv:astro-ph/9812290 v1 · 1998-12-15 · 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{6RHU7QABB5WSTEAJ73QQWDGDAK}

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.

Receipt and verification

First computed	2026-07-04T16:07:22.539727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f44f4fc0010f6d299009fee10b0cc3029b46e2d577ec75eb70fe7601c9fd94af

Aliases

arxiv: astro-ph/9812290 · arxiv_version: astro-ph/9812290v1 · doi: 10.48550/arxiv.astro-ph/9812290 · pith_short_12: 6RHU7QABB5WS · pith_short_16: 6RHU7QABB5WSTEAJ · pith_short_8: 6RHU7QAB

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/6RHU7QABB5WSTEAJ73QQWDGDAK \
  | 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: f44f4fc0010f6d299009fee10b0cc3029b46e2d577ec75eb70fe7601c9fd94af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd6504c8084042e5985b7748beb8de537d64640d32acb41b2646d43265f664b6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-12-15T23:26:07Z",
    "title_canon_sha256": "5013b64eb5cb5c2cf46d2d18248fab0ef72a5b0a00ee466d44b5e11020abedf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9812290",
    "kind": "arxiv",
    "version": 1
  }
}