Pith Number

pith:Y2HOL7EJ

pith:2011:Y2HOL7EJD3BR4OCVZJFH6HFENH

not attested not anchored not stored refs pending

Explanation of the Helium-3 problem

Theo M. Nieuwenhuizen

arxiv:1103.6284 v1 · 2011-03-31 · 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{Y2HOL7EJD3BR4OCVZJFH6HFENH}

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	2026-05-18T04:25:13.500237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c68ee5fc891ec31e3855ca4a7f1ca469c49a8c442ef36db1c3a5e8b9816e319b

Aliases

arxiv: 1103.6284 · arxiv_version: 1103.6284v1 · doi: 10.48550/arxiv.1103.6284 · pith_short_12: Y2HOL7EJD3BR · pith_short_16: Y2HOL7EJD3BR4OCV · pith_short_8: Y2HOL7EJ

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/Y2HOL7EJD3BR4OCVZJFH6HFENH \
  | 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: c68ee5fc891ec31e3855ca4a7f1ca469c49a8c442ef36db1c3a5e8b9816e319b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b40c84b79ca70a3250d86ad59195e9266225754bde937546bf756d3619cebcd2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-31T19:51:01Z",
    "title_canon_sha256": "23f6f13880c4720e3528946c15ef5dd0ca4efc0d5efc7df4b97b76eae8c0e444"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.6284",
    "kind": "arxiv",
    "version": 1
  }
}