Pith Number

pith:HHYGJX7V

pith:2011:HHYGJX7VYAFSIKD4E2FWXICY2C

not attested not anchored not stored refs pending

Do radioactive half-lives vary with the Earth-to-Sun distance?

J.C. Hardy, J.R. Goodwin, V.E. Iacob

arxiv:1108.5326 v1 · 2011-08-26 · nucl-ex · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HHYGJX7VYAFSIKD4E2FWXICY2C}

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	2026-05-18T04:14:38.516722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39f064dff5c00b24287c268b6ba058d095823c8c779658afd090a2a6c3261e4b

Aliases

arxiv: 1108.5326 · arxiv_version: 1108.5326v1 · doi: 10.48550/arxiv.1108.5326 · pith_short_12: HHYGJX7VYAFS · pith_short_16: HHYGJX7VYAFSIKD4 · pith_short_8: HHYGJX7V

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/HHYGJX7VYAFSIKD4E2FWXICY2C \
  | 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: 39f064dff5c00b24287c268b6ba058d095823c8c779658afd090a2a6c3261e4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e8f2f0e15f6c39ce4c5611962fda0806bc0085b19cb0d41d52c52b07cab1bb2",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-ex",
    "submitted_at": "2011-08-26T15:21:45Z",
    "title_canon_sha256": "e56b25b6b9ceeecfff44c26fe23311b5234e0c9a5ff6a142e458d11b055e40ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5326",
    "kind": "arxiv",
    "version": 1
  }
}