Pith Number

pith:JNNW6LOL

pith:2013:JNNW6LOLPCDO2M6UJVHQDJIIA7

not attested not anchored not stored refs pending

Testing quantum electrodynamics in the lowest singlet states of beryllium atom

Jacek Komasa, Krzysztof Pachucki, Mariusz Puchalski

arxiv:1302.2175 v1 · 2013-02-08 · physics.atom-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JNNW6LOLPCDO2M6UJVHQDJIIA7}

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	2026-05-18T00:08:46.680448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b5b6f2dcb7886ed33d44d4f01a50807c571e980cbf7811f6a1f45a20a2bc9a2

Aliases

arxiv: 1302.2175 · arxiv_version: 1302.2175v1 · doi: 10.48550/arxiv.1302.2175 · pith_short_12: JNNW6LOLPCDO · pith_short_16: JNNW6LOLPCDO2M6U · pith_short_8: JNNW6LOL

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/JNNW6LOLPCDO2M6UJVHQDJIIA7 \
  | 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: 4b5b6f2dcb7886ed33d44d4f01a50807c571e980cbf7811f6a1f45a20a2bc9a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee9471b4db398ecceb8e7494edb46c0b73e04ce693a16ede114e43f4b285cf49",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2013-02-08T23:03:41Z",
    "title_canon_sha256": "99469ee34b7cdbca5d525bc58262fb1f76aa63d169829a3a2f4a815ff4903e57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2175",
    "kind": "arxiv",
    "version": 1
  }
}