Pith Number

pith:6DJOX7BB

pith:2006:6DJOX7BB6445UH5ELCNOY3NPU2

not attested not anchored not stored refs pending

Entanglement witnesses and a loophole problem

Dagmar Bruss, Hermann Kampermann, Matthias Kleinmann, Patrick Skwara

arxiv:quant-ph/0608058 v2 · 2006-08-07 · 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{6DJOX7BB6445UH5ELCNOY3NPU2}

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	2026-07-04T15:03:07.511822Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0d2ebfc21f739da1fa4589aec6dafa69c10587c59d4ba5cd2ac861c6188039b

Aliases

arxiv: quant-ph/0608058 · arxiv_version: quant-ph/0608058v2 · doi: 10.48550/arxiv.quant-ph/0608058 · pith_short_12: 6DJOX7BB6445 · pith_short_16: 6DJOX7BB6445UH5E · pith_short_8: 6DJOX7BB

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/6DJOX7BB6445UH5ELCNOY3NPU2 \
  | 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: f0d2ebfc21f739da1fa4589aec6dafa69c10587c59d4ba5cd2ac861c6188039b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36024020fbfc441e28bf40d86523168a07a5150511f615aa0da73d8256d49ef6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2006-08-07T14:28:51Z",
    "title_canon_sha256": "c783da114bef74980b96da55f67c6dc3f3cdce9772cabac879f43f4844e3eff9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0608058",
    "kind": "arxiv",
    "version": 2
  }
}