Pith Number

pith:2W2GXU3K

pith:1999:2W2GXU3KMHJUKCHX2CFEAMYIYC

not attested not anchored not stored refs pending

Fast and User-friendly Quantum Key Distribution

Gregoire Ribordy, Hugo Zbinden, Jean-Daniel Gautier, Nicolas Gisin, Olivier Guinnard

arxiv:quant-ph/9905056 v2 · 1999-05-18 · 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{2W2GXU3KMHJUKCHX2CFEAMYIYC}

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	2026-05-18T01:37:52.508928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5b46bd36a61d34508f7d08a403308c083a416c6dfee8109bf955041d97c1825

Aliases

arxiv: quant-ph/9905056 · arxiv_version: quant-ph/9905056v2 · doi: 10.48550/arxiv.quant-ph/9905056 · pith_short_12: 2W2GXU3KMHJU · pith_short_16: 2W2GXU3KMHJUKCHX · pith_short_8: 2W2GXU3K

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/2W2GXU3KMHJUKCHX2CFEAMYIYC \
  | 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: d5b46bd36a61d34508f7d08a403308c083a416c6dfee8109bf955041d97c1825

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "857d8efac730da35d7a21900128383b90cc07c9c7bd7abebc73c7c6acf7d027f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-05-18T15:08:11Z",
    "title_canon_sha256": "9cff8858c3d7f8f69203aa887c3baccc582aaa8f240f567ac2c990dd2e4c23e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9905056",
    "kind": "arxiv",
    "version": 2
  }
}