Pith Number

pith:UKZPN2SP

pith:2022:UKZPN2SPXQMSAPMZASH5F2R2RV

not attested not anchored not stored refs pending

Long-Range QKD without Trusted Nodes is Not Possible with Current Technology

Adrian Wonfor, Andreas Poppe, Benoit Tranier, Bruno Huttner, Eleni Diamanti, Florian Fr\"owis, Hannes H\"ubel, Hugo Zbinden, Joshua A. Slater, Philippe Grangier, Romain All\'eaume, Tim Spiller, Vicente Martin, Wolfgang Tittel

arxiv:2210.01636 v2 · 2022-10-04 · quant-ph · cs.CR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UKZPN2SPXQMSAPMZASH5F2R2RV}

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	2026-07-05T05:25:51.085892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2b2f6ea4fbc19203d99048fd2ea3a8d63ab70c8c857d16f18d942212db0faf5

Aliases

arxiv: 2210.01636 · arxiv_version: 2210.01636v2 · doi: 10.48550/arxiv.2210.01636 · pith_short_12: UKZPN2SPXQMS · pith_short_16: UKZPN2SPXQMSAPMZ · pith_short_8: UKZPN2SP

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/UKZPN2SPXQMSAPMZASH5F2R2RV \
  | 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: a2b2f6ea4fbc19203d99048fd2ea3a8d63ab70c8c857d16f18d942212db0faf5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d80664dc03f104c9292165c3cbd278a97d3d602218493f9acf44e8f6159a8f9c",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2022-10-04T14:34:13Z",
    "title_canon_sha256": "f1f9be811f896749a4790db2c4cfdac7d098496c22ed2da992cbd6330b94179e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2210.01636",
    "kind": "arxiv",
    "version": 2
  }
}