Pith Number

pith:POFYAWA5

pith:2017:POFYAWA5ZUZDZ3D25LQJDQZFPR

not attested not anchored not stored refs pending

Pre-fixed Threshold Real Time Selection Method in Free-space Quantum Key Distribution

Feihu Xu, Hoi-Kwong Lo, Wenyuan Wang

arxiv:1712.08949 v1 · 2017-12-24 · 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{POFYAWA5ZUZDZ3D25LQJDQZFPR}

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	2026-05-18T00:19:22.133580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b8b80581dcd323cec7aeae091c3257c69d2d90a3bebc223cb4b83056a1487ff

Aliases

arxiv: 1712.08949 · arxiv_version: 1712.08949v1 · doi: 10.48550/arxiv.1712.08949 · pith_short_12: POFYAWA5ZUZD · pith_short_16: POFYAWA5ZUZDZ3D2 · pith_short_8: POFYAWA5

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/POFYAWA5ZUZDZ3D25LQJDQZFPR \
  | 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: 7b8b80581dcd323cec7aeae091c3257c69d2d90a3bebc223cb4b83056a1487ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e52184aad2dcd21e85c386c5c428b682d3689a344d5b7e69ec11ccc27ead84ce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-12-24T17:23:35Z",
    "title_canon_sha256": "b93ffda7668fce5f41a984b4e978f7663435aa1db283fe361df94e0db7c82995"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.08949",
    "kind": "arxiv",
    "version": 1
  }
}