Pith Number

pith:42O266GH

pith:2020:42O266GHJOL4JPA72FKSDO57JW

not attested not anchored not stored refs pending

Securing practical quantum communication systems with optical power limiters

Chao Wang, Charles Ci Wen Lim, Gong Zhang, Ignatius William Primaatmaja, Jing Yan Haw, Xiao Gong

arxiv:2012.08702 v2 · 2020-12-16 · 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{42O266GHJOL4JPA72FKSDO57JW}

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	2026-07-05T02:57:40.851623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e69daf78c74b97c4bc1fd15521bbbf4d949b3c1eb7211635ad44098dd9477049

Aliases

arxiv: 2012.08702 · arxiv_version: 2012.08702v2 · doi: 10.48550/arxiv.2012.08702 · pith_short_12: 42O266GHJOL4 · pith_short_16: 42O266GHJOL4JPA7 · pith_short_8: 42O266GH

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/42O266GHJOL4JPA72FKSDO57JW \
  | 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: e69daf78c74b97c4bc1fd15521bbbf4d949b3c1eb7211635ad44098dd9477049

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2161f46c2b6e03691098d57e5c3de5296a3197622629d7580266e9c41c42c1d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-12-16T02:19:08Z",
    "title_canon_sha256": "a8cfb3f0d43ac8a8bff94ee1453996e35144203cafa452ad01a003b0ddd53dfd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.08702",
    "kind": "arxiv",
    "version": 2
  }
}