Pith Number

pith:W3EQP45W

pith:2005:W3EQP45WUF2QMPQNH2X4FQ5WQK

not attested not anchored not stored refs pending

Separating the classical and quantum information via quantum cloning

F. De Martini, F. Sciarrino, J. Fiurasek, M. Ricci, N.J. Cerf, R. Filip

arxiv:quant-ph/0508055 v1 · 2005-08-06 · 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{W3EQP45WUF2QMPQNH2X4FQ5WQK}

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	2026-07-04T16:58:06.928233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6c907f3b6a175063e0d3eafc2c3b68299199b633a3f6fc24006c263f0c9379d

Aliases

arxiv: quant-ph/0508055 · arxiv_version: quant-ph/0508055v1 · doi: 10.48550/arxiv.quant-ph/0508055 · pith_short_12: W3EQP45WUF2Q · pith_short_16: W3EQP45WUF2QMPQN · pith_short_8: W3EQP45W

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/W3EQP45WUF2QMPQNH2X4FQ5WQK \
  | 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: b6c907f3b6a175063e0d3eafc2c3b68299199b633a3f6fc24006c263f0c9379d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75f7e61c69be593bb64a0c92c695daef56c162379bfd890db06d021e9f2e58df",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-08-06T11:34:07Z",
    "title_canon_sha256": "67381e13ced3a341dd3895d785edb77bf5271c06de5532baad3fd4becda7ea9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0508055",
    "kind": "arxiv",
    "version": 1
  }
}