Pith Number

pith:PX6M7QJE

pith:1998:PX6M7QJE6T3TI552KYTCY4E5A2

not attested not anchored not stored refs pending

Precision Prediction for the Big-Bang Abundance of Primordial Helium

Michael S. Turner, Robert E. Lopez

arxiv:astro-ph/9807279 v3 · 1998-07-28 · 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{PX6M7QJE6T3TI552KYTCY4E5A2}

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

1 paper in Pith

Ponderomotive Effects of Ultralight Dark Matter

Receipt and verification

First computed	2026-07-04T15:32:05.262808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dfccfc124f4f73477ba56262c709d06b89157a233adaafcdb1b547e7317d326

Aliases

arxiv: astro-ph/9807279 · arxiv_version: astro-ph/9807279v3 · doi: 10.48550/arxiv.astro-ph/9807279 · pith_short_12: PX6M7QJE6T3T · pith_short_16: PX6M7QJE6T3TI552 · pith_short_8: PX6M7QJE

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/PX6M7QJE6T3TI552KYTCY4E5A2 \
  | 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: 7dfccfc124f4f73477ba56262c709d06b89157a233adaafcdb1b547e7317d326

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2db1ad31d5cd91267629f63a87f510ef457646fab797b30be5fa99e077be4d8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-28T15:18:12Z",
    "title_canon_sha256": "716da6fc92e97861c4dbbeffe81283de2cc1c6cb390f2baa1860611fd6ec5409"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807279",
    "kind": "arxiv",
    "version": 3
  }
}