Pith Number

pith:QVBZTWA2

pith:2006:QVBZTWA2DEQA5F2HMJFJRHRGDS

not attested not anchored not stored refs pending

Threshold quantum cryptograph based on Grover's algorithm

Fu-Chen Zhu, Jian-Zhong Du, Qiao-Yan Wen, Su-Juan Qin

arxiv:quant-ph/0606136 v2 · 2006-06-16 · 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{QVBZTWA2DEQA5F2HMJFJRHRGDS}

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	2026-05-18T01:37:54.590801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

854399d81a19200e9747624a989e261c91f8c8cf2c9a2365eea8d68f877aeb50

Aliases

arxiv: quant-ph/0606136 · arxiv_version: quant-ph/0606136v2 · doi: 10.48550/arxiv.quant-ph/0606136 · pith_short_12: QVBZTWA2DEQA · pith_short_16: QVBZTWA2DEQA5F2H · pith_short_8: QVBZTWA2

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/QVBZTWA2DEQA5F2HMJFJRHRGDS \
  | 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: 854399d81a19200e9747624a989e261c91f8c8cf2c9a2365eea8d68f877aeb50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e78add5473ee0e55bbac9f1f28fbe832fb7fb50f93b2fde9d79af78a4c1f1bf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2006-06-16T06:02:11Z",
    "title_canon_sha256": "8eefe4d1b233bfdd46ebbf57acc3293e0d154f221004e1b7dce9a12c4aff03c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0606136",
    "kind": "arxiv",
    "version": 2
  }
}