Pith Number

pith:2LBQ2Z6D

pith:2013:2LBQ2Z6DAS2TOYTQPHYJCVKGBW

not attested not anchored not stored refs pending

Measuring the orbital angular momentum of electron vortex beams using a forked grating

Kazuma Hirakawa, Koh Saitoh, Masaya Uchida, Nobuo Tanaka, Yuya Hasegawa

arxiv:1307.6304 v1 · 2013-07-24 · quant-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{2LBQ2Z6DAS2TOYTQPHYJCVKGBW}

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	2026-05-18T01:48:40.799362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2c30d67c304b537627079f09155460da474e1770e0f8f59c22c3238b3f1e151

Aliases

arxiv: 1307.6304 · arxiv_version: 1307.6304v1 · doi: 10.48550/arxiv.1307.6304 · pith_short_12: 2LBQ2Z6DAS2T · pith_short_16: 2LBQ2Z6DAS2TOYTQ · pith_short_8: 2LBQ2Z6D

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/2LBQ2Z6DAS2TOYTQPHYJCVKGBW \
  | 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: d2c30d67c304b537627079f09155460da474e1770e0f8f59c22c3238b3f1e151

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4f5e5abb2632227dffba15d99ba2ccfbfc79678232e278c34f6e4ab0d35bd46",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-07-24T06:26:11Z",
    "title_canon_sha256": "1aaed0ae06a37112e8fadf5947f8bb52cf0e46575e0654dc0c4a6a423b5104cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6304",
    "kind": "arxiv",
    "version": 1
  }
}