Pith Number

pith:EHLN2L3L

pith:2025:EHLN2L3LL7CDBJZWA5YMXQXAR4

not attested not anchored not stored refs pending

Quantum secure direct communication based on fully passive source

Jia-Wei Ying, Lan Zhou, Qi Zhang, Shi-Pu Gu, Xing-Fu Wang, Yu-Bo Sheng

arxiv:2502.12652 v2 · 2025-02-18 · 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{EHLN2L3LL7CDBJZWA5YMXQXAR4}

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.

Cited by

1 paper in Pith

Fully passive reference frame independent quantum key distribution

Receipt and verification

First computed	2026-07-05T11:28:14.359169Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21d6dd2f6b5fc430a7360770cbc2e08f108c32051b3f5b8116413732da1fb0a8

Aliases

arxiv: 2502.12652 · arxiv_version: 2502.12652v2 · doi: 10.48550/arxiv.2502.12652 · pith_short_12: EHLN2L3LL7CD · pith_short_16: EHLN2L3LL7CDBJZW · pith_short_8: EHLN2L3L

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/EHLN2L3LL7CDBJZWA5YMXQXAR4 \
  | 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: 21d6dd2f6b5fc430a7360770cbc2e08f108c32051b3f5b8116413732da1fb0a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7047d3d5bd275d5e556b203a2f7934d0c1c982ccec46def1b76cb179e8a4c6c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-02-18T08:59:12Z",
    "title_canon_sha256": "9afd3b267dbb7710efcf5001607978b2c2ab8784a62cd32f01f5815ea902cc6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.12652",
    "kind": "arxiv",
    "version": 2
  }
}