Pith Number

pith:CWOQ6LWZ

pith:2003:CWOQ6LWZR6C6SWSPJ6GLOF2P63

not attested not anchored not stored refs pending

Secure direct communication using step-split Einstein-Podolsky-Rosen pair

Qing-yu Cai

arxiv:quant-ph/0311055 v2 · 2003-11-10 · 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{CWOQ6LWZR6C6SWSPJ6GLOF2P63}

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	2026-05-18T01:05:03.789018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

159d0f2ed98f85e95a4f4f8cb7174ff6deaa68bee4a4688c304a68adf9b4219c

Aliases

arxiv: quant-ph/0311055 · arxiv_version: quant-ph/0311055v2 · doi: 10.48550/arxiv.quant-ph/0311055 · pith_short_12: CWOQ6LWZR6C6 · pith_short_16: CWOQ6LWZR6C6SWSP · pith_short_8: CWOQ6LWZ

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/CWOQ6LWZR6C6SWSPJ6GLOF2P63 \
  | 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: 159d0f2ed98f85e95a4f4f8cb7174ff6deaa68bee4a4688c304a68adf9b4219c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ea5b4125ab13ea744d81d7c2228dad71d478059d66d5573dc5820014a930043",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-11-10T13:21:44Z",
    "title_canon_sha256": "deb3fbd05a4d720a71dead0a39eca6bee2857c5092a9882dc68a38d5566cc393"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0311055",
    "kind": "arxiv",
    "version": 2
  }
}