Pith Number

pith:UT6QGEVQ

pith:2015:UT6QGEVQE3NOKWUD7NMCPMPJRO

not attested not anchored not stored refs pending

Direct Measurement of Time-Frequency Analogues of Sub-Planck Structures

Chih-Cheng Chen, Ludmila Praxmeyer, Popo Yang, Ray-Kuang Lee, Shang-Da Yang

arxiv:1505.07318 v1 · 2015-05-27 · quant-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UT6QGEVQE3NOKWUD7NMCPMPJRO}

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	2026-05-18T01:13:16.753340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4fd0312b026dae55a83fb5827b1e98bb1ec6c3465b574d2d4b815617237060c

Aliases

arxiv: 1505.07318 · arxiv_version: 1505.07318v1 · doi: 10.48550/arxiv.1505.07318 · pith_short_12: UT6QGEVQE3NO · pith_short_16: UT6QGEVQE3NOKWUD · pith_short_8: UT6QGEVQ

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/UT6QGEVQE3NOKWUD7NMCPMPJRO \
  | 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: a4fd0312b026dae55a83fb5827b1e98bb1ec6c3465b574d2d4b815617237060c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ec65d4b57cabbdf18f42861de800c58827390140738b6134a5ae581550cf8e5",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-05-27T13:53:38Z",
    "title_canon_sha256": "48056d26bb68ee33e0283736def5630d7926e1d48d8eea099f21e0d5998bb748"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.07318",
    "kind": "arxiv",
    "version": 1
  }
}