Pith Number

pith:QMLLHL3Q

pith:1999:QMLLHL3QGC2IPFFGC7UKDR7FBM

not attested not anchored not stored refs pending

Practical quantum cryptography for secure free-space communications

C. G. Peterson, George L. Morgan, Jane E. Nordholt, Paul G. Kwiat, Richard J. Hughes, Steve K. Lamoreaux, William T. Buttler

arxiv:quant-ph/9905009 v1 · 1999-05-04 · 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{QMLLHL3QGC2IPFFGC7UKDR7FBM}

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	2026-05-18T01:37:52.517165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8316b3af7030b48794a617e8a1c7e50b1603c0afdb1f89646fec2b7dc338f753

Aliases

arxiv: quant-ph/9905009 · arxiv_version: quant-ph/9905009v1 · doi: 10.48550/arxiv.quant-ph/9905009 · pith_short_12: QMLLHL3QGC2I · pith_short_16: QMLLHL3QGC2IPFFG · pith_short_8: QMLLHL3Q

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/QMLLHL3QGC2IPFFGC7UKDR7FBM \
  | 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: 8316b3af7030b48794a617e8a1c7e50b1603c0afdb1f89646fec2b7dc338f753

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46bfd3a04a625e84fc47178a70211a9faea0067266bf84e573573737ced2ed4f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-05-04T17:43:37Z",
    "title_canon_sha256": "d6b5ad24e7c6baa152567ff287e5fb97f7abf5d2db4767a6ca50ed8887404c7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9905009",
    "kind": "arxiv",
    "version": 1
  }
}