Pith Number

pith:57HFGSVA

pith:2026:57HFGSVAV3K66K2YQTEFTJWIQ5

not attested not anchored not stored refs pending

Fifty years of primordial helium abundances: A statistical reanalysis

Giuseppe Bono, Nabil Husain, Richard de Grijs

arxiv:2606.03192 v1 · 2026-06-02 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{57HFGSVAV3K66K2YQTEFTJWIQ5}

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	2026-06-03T01:05:34.523444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efce534aa0aed5ef2b5884c859a6c8874791f098e674c0b3a47103ba9258d6dc

Aliases

arxiv: 2606.03192 · arxiv_version: 2606.03192v1 · doi: 10.48550/arxiv.2606.03192 · pith_short_12: 57HFGSVAV3K6 · pith_short_16: 57HFGSVAV3K66K2Y · pith_short_8: 57HFGSVA

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/57HFGSVAV3K66K2YQTEFTJWIQ5 \
  | 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: efce534aa0aed5ef2b5884c859a6c8874791f098e674c0b3a47103ba9258d6dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d71306e74c90191496912c53284d45fb6665fa7235dd5a380e115c64f9dd104f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-06-02T05:50:43Z",
    "title_canon_sha256": "881a5706e6124be2de34048520692902a7f034c8e66d824f82c16293936fe085"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.03192",
    "kind": "arxiv",
    "version": 1
  }
}