Pith Number

pith:CIY2MMPP

pith:2020:CIY2MMPPSSI747ZL2SAZOLUSJJ

not attested not anchored not stored refs pending

Squeeze free space with nonlocal flat optics

Cheng Guo, Haiwen Wang, Shanhui Fan

arxiv:2003.06918 v1 · 2020-03-15 · 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{CIY2MMPPSSI747ZL2SAZOLUSJJ}

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	2026-07-05T02:05:24.951324Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1231a631ef9491fe7f2bd481972e924a758810f771ec96c292338e45ef1e3ec9

Aliases

arxiv: 2003.06918 · arxiv_version: 2003.06918v1 · doi: 10.48550/arxiv.2003.06918 · pith_short_12: CIY2MMPPSSI7 · pith_short_16: CIY2MMPPSSI747ZL · pith_short_8: CIY2MMPP

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/CIY2MMPPSSI747ZL2SAZOLUSJJ \
  | 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: 1231a631ef9491fe7f2bd481972e924a758810f771ec96c292338e45ef1e3ec9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94051ef9a15d6428990b0d5c42811d56ae741b92cf73f07401a9c11b800f327a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2020-03-15T20:47:28Z",
    "title_canon_sha256": "f7f3ee3bfee854e4c8fd066c047f75d7d505cb9b4b2d71d421fdbaf1eb4de174"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.06918",
    "kind": "arxiv",
    "version": 1
  }
}