Pith Number

pith:HHY7R523

pith:2003:HHY7R523JDTL647LPEP6ZN4UMI

not attested not anchored not stored refs pending

Search for anomalously heavy isotopes of helium in the Earth's atmosphere

J. P. Schiffer, L.-B. Wang, P. Mueller, R. J. Holt, T. P. O'Connor, Z.-T. Lu

arxiv:nucl-ex/0302025 v1 · 2003-02-21 · nucl-ex

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HHY7R523JDTL647LPEP6ZN4UMI}

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	2026-07-04T16:41:48.428079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39f1f8f75b48e6bf73eb791fecb794622b32c4d70162f6a2947b85cfcc941704

Aliases

arxiv: nucl-ex/0302025 · arxiv_version: nucl-ex/0302025v1 · doi: 10.48550/arxiv.nucl-ex/0302025 · pith_short_12: HHY7R523JDTL · pith_short_16: HHY7R523JDTL647L · pith_short_8: HHY7R523

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/HHY7R523JDTL647LPEP6ZN4UMI \
  | 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: 39f1f8f75b48e6bf73eb791fecb794622b32c4d70162f6a2947b85cfcc941704

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c06c90c93d2075a11c08063e12d29a4305ccb5244e4a46e72b975a23e84789d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "nucl-ex",
    "submitted_at": "2003-02-21T15:57:00Z",
    "title_canon_sha256": "dcd25a08a2cd70838921ce70d95c978a9c82f1ad06f863aafa0bd4bcaf460956"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nucl-ex/0302025",
    "kind": "arxiv",
    "version": 1
  }
}