Pith Number

pith:F2JBQUTL

pith:1999:F2JBQUTLWXA2DUB2CWW5D6U4UY

not attested not anchored not stored refs pending

Quantum cryptography via parametric downconversion

Barry C. Sanders, Gilles Brassard, Tal Mor

arxiv:quant-ph/9906074 v1 · 1999-06-21 · 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{F2JBQUTLWXA2DUB2CWW5D6U4UY}

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	2026-05-18T02:16:51.739106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e9218526bb5c1a1d03a15add1fa9ca63e6c8dfe99f7571fc7ff734b525c882b

Aliases

arxiv: quant-ph/9906074 · arxiv_version: quant-ph/9906074v1 · doi: 10.48550/arxiv.quant-ph/9906074 · pith_short_12: F2JBQUTLWXA2 · pith_short_16: F2JBQUTLWXA2DUB2 · pith_short_8: F2JBQUTL

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/F2JBQUTLWXA2DUB2CWW5D6U4UY \
  | 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: 2e9218526bb5c1a1d03a15add1fa9ca63e6c8dfe99f7571fc7ff734b525c882b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1914d486e96a8ef2ea2024c262d68ce277ca04ee971973a86d039d4779b63a0e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-06-21T07:25:38Z",
    "title_canon_sha256": "f1167b93bae24401643bd58d4f7ab44ccfb5e1443c884545afc24312d821c561"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9906074",
    "kind": "arxiv",
    "version": 1
  }
}