Pith Number

pith:GKKHIG7W

pith:2021:GKKHIG7WSWD45OF4XCH2TPUFDW

not attested not anchored not stored refs pending

Fundamental limitations on the device-independent quantum conference key agreement

Karol Horodecki, Marek Winczewski, Siddhartha Das

arxiv:2111.02467 v2 · 2021-11-03 · quant-ph · cs.IT · math-ph · math.IT · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GKKHIG7WSWD45OF4XCH2TPUFDW}

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	2026-07-05T05:32:29.202119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3294741bf69587ceb8bcb88fa9be851dbc9a5f9347902b5cf00481c1db3d0c26

Aliases

arxiv: 2111.02467 · arxiv_version: 2111.02467v2 · doi: 10.48550/arxiv.2111.02467 · pith_short_12: GKKHIG7WSWD4 · pith_short_16: GKKHIG7WSWD45OF4 · pith_short_8: GKKHIG7W

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/GKKHIG7WSWD45OF4XCH2TPUFDW \
  | 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: 3294741bf69587ceb8bcb88fa9be851dbc9a5f9347902b5cf00481c1db3d0c26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "489db62345819de856547b0517357b272fede195b1a4d7b3073aa4c207c1339b",
    "cross_cats_sorted": [
      "cs.IT",
      "math-ph",
      "math.IT",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-11-03T18:45:23Z",
    "title_canon_sha256": "74c8c1a1d0ea7c3c8cf17c294eb2eba25199e0908a7d2fd1ea56ee148d476159"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.02467",
    "kind": "arxiv",
    "version": 2
  }
}