Pith Number

pith:5UFLQZEV

pith:2011:5UFLQZEVCUHQM4QJZX4DVS52XU

not attested not anchored not stored refs pending

First direct measurement of positronium hyperfine splitting with sub-THz light

A. Miyazaki, H. Saito, I. Ogawa, S. Asai, S. Sabchevski, T. Idehara, T.Kobayashi, T. Namba, T. Suehara, T. Yamazaki, Y. Urushizaki

arxiv:1105.4352 v1 · 2011-05-22 · hep-ex · 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{5UFLQZEVCUHQM4QJZX4DVS52XU}

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	2026-05-18T04:21:29.375013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed0ab86495150f067209cdf83acbbabd38f12a868a0a790f060b9a0400fabd54

Aliases

arxiv: 1105.4352 · arxiv_version: 1105.4352v1 · doi: 10.48550/arxiv.1105.4352 · pith_short_12: 5UFLQZEVCUHQ · pith_short_16: 5UFLQZEVCUHQM4QJ · pith_short_8: 5UFLQZEV

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/5UFLQZEVCUHQM4QJZX4DVS52XU \
  | 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: ed0ab86495150f067209cdf83acbbabd38f12a868a0a790f060b9a0400fabd54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7401dcc559bf52c8887f789c01aa9a220fe2a3259df997735692b6d008d56f6",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ex",
    "submitted_at": "2011-05-22T17:00:28Z",
    "title_canon_sha256": "5deaaa171f78646363d7a23d2d3e6582b6f733d7f885cd4dfd075b0f709e8f62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.4352",
    "kind": "arxiv",
    "version": 1
  }
}