Pith Number

pith:H73EHCK4

pith:2014:H73EHCK4RDBLS67YQCNDZ3BA5N

not attested not anchored not stored refs pending

On the power of PPT-preserving and non-signalling codes

Debbie Leung, William Matthews

arxiv:1406.7142 v2 · 2014-06-27 · quant-ph · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H73EHCK4RDBLS67YQCNDZ3BA5N}

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	2026-05-18T01:23:33.770000Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ff643895c88c2b97bf8809a3cec20eb5aa9c1598ffc01132539ad01bbc3a3d9

Aliases

arxiv: 1406.7142 · arxiv_version: 1406.7142v2 · doi: 10.48550/arxiv.1406.7142 · pith_short_12: H73EHCK4RDBL · pith_short_16: H73EHCK4RDBLS67Y · pith_short_8: H73EHCK4

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/H73EHCK4RDBLS67YQCNDZ3BA5N \
  | 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: 3ff643895c88c2b97bf8809a3cec20eb5aa9c1598ffc01132539ad01bbc3a3d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2792f0eac4dd5101f786f791b6cbe6b654b8f265b903bedbfdc853114a58dfe9",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-06-27T10:33:17Z",
    "title_canon_sha256": "c1ca0bb272b828002d1e86b98ccaa2e0f0a890e6fdb7a8a50ebd5991190ba7d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.7142",
    "kind": "arxiv",
    "version": 2
  }
}