Pith Number

pith:S3AWCGRA

pith:2003:S3AWCGRAUBRN5L3YXEYZSJDNED

not attested not anchored not stored refs pending

Primordial Nucleosynthesis as a Test of the Friedmann Equation in the Early Universe

Eduard Mass\'o, Francesc Rota

arxiv:astro-ph/0302554 v2 · 2003-02-26 · astro-ph · hep-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{S3AWCGRAUBRN5L3YXEYZSJDNED}

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	2026-05-18T01:09:03.497728Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96c1611a20a062deaf78b93199246d20e963735cdcb60302949e2190f18d403d

Aliases

arxiv: astro-ph/0302554 · arxiv_version: astro-ph/0302554v2 · doi: 10.48550/arxiv.astro-ph/0302554 · pith_short_12: S3AWCGRAUBRN · pith_short_16: S3AWCGRAUBRN5L3Y · pith_short_8: S3AWCGRA

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/S3AWCGRAUBRN5L3YXEYZSJDNED \
  | 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: 96c1611a20a062deaf78b93199246d20e963735cdcb60302949e2190f18d403d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f48fdeab59ba1bedc08b44ba75753c6b1eaf14888467fcc46775e233e30d23e",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-02-26T18:14:22Z",
    "title_canon_sha256": "3a03e8964be340e21ef0530b9bab10856800604ae22947019732b7b9a6d7ec4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0302554",
    "kind": "arxiv",
    "version": 2
  }
}