Pith Number

pith:IYJDBE4O

pith:2008:IYJDBE4OO4XOTBJX22YGSCLHXD

not attested not anchored not stored refs pending

Unconditional security of continuous-variable quantum key distribution

Anthony Leverrier, Evgueni Karpov, Nicolas J. Cerf, Philippe Grangier

arxiv:0809.2252 v3 · 2008-09-12 · 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{IYJDBE4OO4XOTBJX22YGSCLHXD}

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	2026-05-18T04:33:27.420896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

461230938e772ee98537d6b0690967b8f96cfdbaf8173ee286275afbbb3c6119

Aliases

arxiv: 0809.2252 · arxiv_version: 0809.2252v3 · doi: 10.48550/arxiv.0809.2252 · pith_short_12: IYJDBE4OO4XO · pith_short_16: IYJDBE4OO4XOTBJX · pith_short_8: IYJDBE4O

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/IYJDBE4OO4XOTBJX22YGSCLHXD \
  | 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: 461230938e772ee98537d6b0690967b8f96cfdbaf8173ee286275afbbb3c6119

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98d5d9bdd2868af404baec7f9e89360e4f1ff216faaca46203f53301f97b4f3a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2008-09-12T17:14:49Z",
    "title_canon_sha256": "f14a9015ccbb16c1152f993b6152eb9ddcd35f11b1a27212223b6cdb0d6b06cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2252",
    "kind": "arxiv",
    "version": 3
  }
}