Pith Number

pith:PDBUDMJ2

pith:2009:PDBUDMJ2SI6PEY46JYO37YLQAA

not attested not anchored not stored refs pending

Entanglement between distant qubits in cyclic XX chains

N. Canosa, R. Rossignoli

arxiv:0906.0801 v1 · 2009-06-04 · 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{PDBUDMJ2SI6PEY46JYO37YLQAA}

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	2026-05-18T02:13:29.231542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78c341b13a923cf2639e4e1dbfe17000054b9a5a17e19c25ab409a290bd83c7a

Aliases

arxiv: 0906.0801 · arxiv_version: 0906.0801v1 · doi: 10.48550/arxiv.0906.0801 · pith_short_12: PDBUDMJ2SI6P · pith_short_16: PDBUDMJ2SI6PEY46 · pith_short_8: PDBUDMJ2

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/PDBUDMJ2SI6PEY46JYO37YLQAA \
  | 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: 78c341b13a923cf2639e4e1dbfe17000054b9a5a17e19c25ab409a290bd83c7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90aab208d21bad4b695a7bc64656b11eff384a8ec6d5c3d69ab13291285762ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-06-04T00:23:45Z",
    "title_canon_sha256": "36f24c35ff41da9919640e063636509324b415d6791b627fe7fadd3528c22b19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0801",
    "kind": "arxiv",
    "version": 1
  }
}