Pith Number

pith:C6GWIZFI

pith:2002:C6GWIZFIWJVUV6W6AOGNAQDZ55

not attested not anchored not stored refs pending

Constraints on Neutrino Degeneracy from the Cosmic Microwave Background and Primordial Nucleosynthesis

G. J. Mathews, M. Orito, T. Kajino, Y. Wang

arxiv:astro-ph/0203352 v1 · 2002-03-20 · 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{C6GWIZFIWJVUV6W6AOGNAQDZ55}

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	2026-07-04T16:29:34.776822Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

178d6464a8b26b4afade038cd04079ef69ed950186ebefcb37750c56aee77ae5

Aliases

arxiv: astro-ph/0203352 · arxiv_version: astro-ph/0203352v1 · doi: 10.48550/arxiv.astro-ph/0203352 · pith_short_12: C6GWIZFIWJVU · pith_short_16: C6GWIZFIWJVUV6W6 · pith_short_8: C6GWIZFI

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/C6GWIZFIWJVUV6W6AOGNAQDZ55 \
  | 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: 178d6464a8b26b4afade038cd04079ef69ed950186ebefcb37750c56aee77ae5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93efbe40045c5fd7e487cf246f92bc69e113b650d6fdd11d1f858329821cc403",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-03-20T20:58:53Z",
    "title_canon_sha256": "e5613a21ca35067181e941e0d3983da78927350b28e84944f22e640ca5d7772e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0203352",
    "kind": "arxiv",
    "version": 1
  }
}