Pith Number

pith:QDM7QVWU

pith:2005:QDM7QVWUMWPQ2WPHPXKXFLJYOW

not attested not anchored not stored refs pending

The Nuclear Physics of Hyperfine Structure in Hydrogenic Atoms

G. L. Payne, J. L. Friar

arxiv:nucl-th/0502004 v1 · 2005-02-01 · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDM7QVWUMWPQ2WPHPXKXFLJYOW}

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	2026-05-18T02:35:08.167855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80d9f856d4659f0d59e77dd572ad3875b9aa4c8ece2ca291ec577c000c7cbfc5

Aliases

arxiv: nucl-th/0502004 · arxiv_version: nucl-th/0502004v1 · doi: 10.48550/arxiv.nucl-th/0502004 · pith_short_12: QDM7QVWUMWPQ · pith_short_16: QDM7QVWUMWPQ2WPH · pith_short_8: QDM7QVWU

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/QDM7QVWUMWPQ2WPHPXKXFLJYOW \
  | 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: 80d9f856d4659f0d59e77dd572ad3875b9aa4c8ece2ca291ec577c000c7cbfc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fb0cb4ec8fbb40780456e740ea851c37c521abf9a6e266fe2d4fe258f222e76",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "nucl-th",
    "submitted_at": "2005-02-01T17:15:35Z",
    "title_canon_sha256": "5feb6c5476fc101de1b7bb15b2a0f25b843795b4521c866d7d512e7c324ca5d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nucl-th/0502004",
    "kind": "arxiv",
    "version": 1
  }
}