Pith Number

pith:S2UGPGHG

pith:1999:S2UGPGHG64RR2RVXGEOSRQKCUO

not attested not anchored not stored refs pending

Disentanglement of pure bipartite quantum states by local cloning

Anirban Roy, Guruprasad Kar, Somshubhro Bandyopadhyay

arxiv:quant-ph/9903015 v3 · 1999-03-04 · 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{S2UGPGHG64RR2RVXGEOSRQKCUO}

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	2026-07-04T16:15:40.320170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96a86798e6f7231d46b7311d28c142a3b378dbb792ff4d39c9db456ca6ba6249

Aliases

arxiv: quant-ph/9903015 · arxiv_version: quant-ph/9903015v3 · doi: 10.48550/arxiv.quant-ph/9903015 · pith_short_12: S2UGPGHG64RR · pith_short_16: S2UGPGHG64RR2RVX · pith_short_8: S2UGPGHG

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/S2UGPGHG64RR2RVXGEOSRQKCUO \
  | 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: 96a86798e6f7231d46b7311d28c142a3b378dbb792ff4d39c9db456ca6ba6249

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd3f029d3c1b78bfdb8f10bde322f546768f2d7c992106c413db86b6630f34d7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-03-04T04:10:46Z",
    "title_canon_sha256": "7cde2f6d2ee5c9fc6d22ab37c524955401a50d305ceeac0c2fb48150a9f09896"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9903015",
    "kind": "arxiv",
    "version": 3
  }
}