Pith Number

pith:JYFP2ERN

pith:1999:JYFP2ERNJZ55BJNUZTN3XREI6V

not attested not anchored not stored refs pending

Quantum secure identification using entanglement and catalysis

Howard N. Barnum

arxiv:quant-ph/9910072 v1 · 1999-10-15 · 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{JYFP2ERNJZ55BJNUZTN3XREI6V}

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.

Cited by

1 paper in Pith

Design and analysis of a set of discrete variable protocols for secure quantum communication

Receipt and verification

First computed	2026-07-04T14:47:28.947055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e0afd122d4e7bd0a5b4ccdbbbc488f579b341dd919a9b514c3baf634325ff71

Aliases

arxiv: quant-ph/9910072 · arxiv_version: quant-ph/9910072v1 · doi: 10.48550/arxiv.quant-ph/9910072 · pith_short_12: JYFP2ERNJZ55 · pith_short_16: JYFP2ERNJZ55BJNU · pith_short_8: JYFP2ERN

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/JYFP2ERNJZ55BJNUZTN3XREI6V \
  | 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: 4e0afd122d4e7bd0a5b4ccdbbbc488f579b341dd919a9b514c3baf634325ff71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b6200432b68dfa060d68e8496aee64d80520132586fb2ed69ddd9be0dd56de6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-10-15T15:52:35Z",
    "title_canon_sha256": "9323bc12b2b61c0f889b9f7ebc4f75a621cfdf325be7ec6ffa68ab5082994ed9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9910072",
    "kind": "arxiv",
    "version": 1
  }
}