Pith Number

pith:GH6QIGBD

pith:1999:GH6QIGBDJBJODYWHJV4LOGVQKE

not attested not anchored not stored refs pending

Big bang nucleosynthesis limit on N_nu

E. Lisi, F.L. Villante, Subir Sarkar

arxiv:hep-ph/9901404 v2 · 1999-01-25 · hep-ph · 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{GH6QIGBDJBJODYWHJV4LOGVQKE}

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	2026-07-04T15:18:25.425695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31fd0418234852e1e2c74d78b71ab05117d2d57be65fda4fdebc41eedace59cb

Aliases

arxiv: hep-ph/9901404 · arxiv_version: hep-ph/9901404v2 · doi: 10.48550/arxiv.hep-ph/9901404 · pith_short_12: GH6QIGBDJBJO · pith_short_16: GH6QIGBDJBJODYWH · pith_short_8: GH6QIGBD

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/GH6QIGBDJBJODYWHJV4LOGVQKE \
  | 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: 31fd0418234852e1e2c74d78b71ab05117d2d57be65fda4fdebc41eedace59cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fcffbb6bdace2f41977c69ff46e5c53e6a4d5af8174f2de66825f9127ffc9ba",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "1999-01-25T16:23:24Z",
    "title_canon_sha256": "12580f270bc9d74278320f9b3d50d3898f265422964a10bb04c2721e0842d1e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-ph/9901404",
    "kind": "arxiv",
    "version": 2
  }
}