Pith Number

pith:ZFOXZGDT

pith:2012:ZFOXZGDT54TC3MHG6VWVBTEMA6

not attested not anchored not stored refs pending

2-GHz clock quantum key distribution over 260 km of standard telecom fiber

Guang-Can Guo, Hong-Wei Li, Jun-Fu Guo, Shuang Wang, Wei Chen, Zheng-Fu Han, Zheng Zhou, Zhen-Qiang Yin

arxiv:1203.4323 v1 · 2012-03-20 · 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{ZFOXZGDT54TC3MHG6VWVBTEMA6}

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	2026-05-18T03:59:39.342334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c95d7c9873ef262db0e6f56d50cc8c0780963604d61cbe18aad69c6fe3929a18

Aliases

arxiv: 1203.4323 · arxiv_version: 1203.4323v1 · doi: 10.48550/arxiv.1203.4323 · pith_short_12: ZFOXZGDT54TC · pith_short_16: ZFOXZGDT54TC3MHG · pith_short_8: ZFOXZGDT

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/ZFOXZGDT54TC3MHG6VWVBTEMA6 \
  | 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: c95d7c9873ef262db0e6f56d50cc8c0780963604d61cbe18aad69c6fe3929a18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e565476959f3c699417c3e7d47526f0b10c283f474b8ebe7adbf22f68d52ea8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-03-20T06:22:13Z",
    "title_canon_sha256": "f830ebe28f1833a42e08e9288adf196a0877381884dc35c048f140ff59668dd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4323",
    "kind": "arxiv",
    "version": 1
  }
}