Pith Number

pith:D2F5TQP4

pith:2013:D2F5TQP4EBUMRUHYQQR6AIAWLE

not attested not anchored not stored refs pending

Demonstration of Free-space Reference Frame Independent Quantum Key Distribution

A. Laing, A. O. Niskanen, D. Bitauld, H. W. Li, J. L. O'Brien, J. Wabnig

arxiv:1305.0158 v1 · 2013-05-01 · 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{D2F5TQP4EBUMRUHYQQR6AIAWLE}

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	2026-05-18T03:19:24.102982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e8bd9c1fc2068c8d0f88423e0201659102c4f1176e57a207a5d3af77da26a23

Aliases

arxiv: 1305.0158 · arxiv_version: 1305.0158v1 · doi: 10.48550/arxiv.1305.0158 · pith_short_12: D2F5TQP4EBUM · pith_short_16: D2F5TQP4EBUMRUHY · pith_short_8: D2F5TQP4

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/D2F5TQP4EBUMRUHYQQR6AIAWLE \
  | 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: 1e8bd9c1fc2068c8d0f88423e0201659102c4f1176e57a207a5d3af77da26a23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7cf39214c9b1c782dea03e93152a7ca0af2de5c55b587b963b72fecd9fe4dd96",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-05-01T12:48:05Z",
    "title_canon_sha256": "1e177ea5d8378d52b3305a3a2cf13234bd3acd3b93f28b5fe8e54865fb9cd6ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0158",
    "kind": "arxiv",
    "version": 1
  }
}