Pith Number

pith:BOWOFA7F

pith:2010:BOWOFA7FVCIASHQMG7TNFP3PU4

not attested not anchored not stored refs pending

Quantum Key Distribution by Utilizing Four-Level Particles

Fengli Yan, Tao Yan

arxiv:1002.1978 v1 · 2010-02-09 · 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{BOWOFA7FVCIASHQMG7TNFP3PU4}

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	2026-05-18T04:20:38.742902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bace283e5a890091e0c37e6d2bf6fa7239f779e7c473f354d5b2c515b4c5327

Aliases

arxiv: 1002.1978 · arxiv_version: 1002.1978v1 · doi: 10.48550/arxiv.1002.1978 · pith_short_12: BOWOFA7FVCIA · pith_short_16: BOWOFA7FVCIASHQM · pith_short_8: BOWOFA7F

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/BOWOFA7FVCIASHQMG7TNFP3PU4 \
  | 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: 0bace283e5a890091e0c37e6d2bf6fa7239f779e7c473f354d5b2c515b4c5327

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37f4146b01987b7149074b89aa9c8fc9adb190c8e926435608cea3cdf2a429fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-02-09T21:39:59Z",
    "title_canon_sha256": "20e87ae6a9cb57b108fbd4ec6aee210d3b42452b807a5c85f5e24cc1e5d8f489"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.1978",
    "kind": "arxiv",
    "version": 1
  }
}