Pith Number

pith:KD4Z5XVP

pith:2004:KD4Z5XVPWQVGLKPVALZ2PDCXXD

not attested not anchored not stored refs pending

Intrinsic-Stabilization Uni-Directional Quantum Key Distribution Between Beijing and Tianjin

Bing Zhu, Guang-Can Guo, Xiao-Fan Mo, You-zhen Gui, Zheng-Fu Han

arxiv:quant-ph/0412023 v1 · 2004-12-03 · 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{KD4Z5XVPWQVGLKPVALZ2PDCXXD}

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	2026-07-04T16:51:06.900671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50f99edeafb42a65a9f502f3a78c57b8c71d4b51cd293e24a7059a4fdff317ba

Aliases

arxiv: quant-ph/0412023 · arxiv_version: quant-ph/0412023v1 · doi: 10.48550/arxiv.quant-ph/0412023 · pith_short_12: KD4Z5XVPWQVG · pith_short_16: KD4Z5XVPWQVGLKPV · pith_short_8: KD4Z5XVP

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/KD4Z5XVPWQVGLKPVALZ2PDCXXD \
  | 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: 50f99edeafb42a65a9f502f3a78c57b8c71d4b51cd293e24a7059a4fdff317ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13620587383dac53b2c096c8086503e0bcc163c536839c0604b8df74e3828d1b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2004-12-03T14:09:00Z",
    "title_canon_sha256": "4b2934a1639df1c8d8ca5770d47dfb9ccc82088ad878a9897e6f5cd1c2481557"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0412023",
    "kind": "arxiv",
    "version": 1
  }
}