Pith Number

pith:C54GN76N

pith:2013:C54GN76ND6DBU3A65TFY72YSRT

not attested not anchored not stored refs pending

Hyperentanglement concentration for two-photon four-qubit systems with linear optics

Bao-Cang Ren, Fang-Fang Du, Fu-Guo Deng

arxiv:1306.0050 v2 · 2013-06-01 · 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{C54GN76ND6DBU3A65TFY72YSRT}

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	2026-05-18T01:49:38.925079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

177866ffcd1f861a6c1eeccb8feb128cf07d1531e34182ff9531a574411bc084

Aliases

arxiv: 1306.0050 · arxiv_version: 1306.0050v2 · doi: 10.48550/arxiv.1306.0050 · pith_short_12: C54GN76ND6DB · pith_short_16: C54GN76ND6DBU3A6 · pith_short_8: C54GN76N

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/C54GN76ND6DBU3A65TFY72YSRT \
  | 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: 177866ffcd1f861a6c1eeccb8feb128cf07d1531e34182ff9531a574411bc084

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b681a3b2704dfe204c7e186f1020434c3a05288ac1fb5b56595f7abad217d822",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-06-01T00:04:16Z",
    "title_canon_sha256": "982f474f79da5718882054ae032005d3d280ee33f96f79dfa6c045daaf45d29f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.0050",
    "kind": "arxiv",
    "version": 2
  }
}