Pith Number

pith:HU7HL65Y

pith:2020:HU7HL65YRHAL2SODGZYNNYZAHC

not attested not anchored not stored refs pending

Observing the "quantum Cheshire cat" effect with noninvasive weak measurement

Dong-Gil Im, Sang-Wook Han, Sung Moon, Yong-Su Kim, Yoon-Ho Kim, Yosep Kim, Young-Wook Cho

arxiv:2004.07451 v1 · 2020-04-16 · 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{HU7HL65YRHAL2SODGZYNNYZAHC}

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	2026-07-05T02:52:38.595194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d3e75fbb889c0bd49c33670d6e32038afa01475745f698c8b76840d0515de0a

Aliases

arxiv: 2004.07451 · arxiv_version: 2004.07451v1 · doi: 10.48550/arxiv.2004.07451 · pith_short_12: HU7HL65YRHAL · pith_short_16: HU7HL65YRHAL2SOD · pith_short_8: HU7HL65Y

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/HU7HL65YRHAL2SODGZYNNYZAHC \
  | 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: 3d3e75fbb889c0bd49c33670d6e32038afa01475745f698c8b76840d0515de0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d177d2fdaa2c2faecb65386a480c078e17d27e1a5362ba4f366c90af1806685",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-04-16T04:18:01Z",
    "title_canon_sha256": "616df688096bde8ce38a144ad8a2c2f10badc2b6c3d59e3222c72f5be9e7e3fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.07451",
    "kind": "arxiv",
    "version": 1
  }
}