Pith Number

pith:OCCFSEW2

pith:2016:OCCFSEW2ZRIBF5G4VEU56QSXGM

not attested not anchored not stored refs pending

Ring-shaped spectra of parametric down-conversion and entangled photons that never meet

Denis Kopylov, Gerd Leuchs, Kirill Spasibko, Maria Chekhova, Tatiana Murzina

arxiv:1603.08101 v1 · 2016-03-26 · quant-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OCCFSEW2ZRIBF5G4VEU56QSXGM}

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	2026-05-18T01:11:48.274328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70845912dacc5012f4dca929df425733107869535e8db793bfe9fd0fe8ea3402

Aliases

arxiv: 1603.08101 · arxiv_version: 1603.08101v1 · doi: 10.48550/arxiv.1603.08101 · pith_short_12: OCCFSEW2ZRIB · pith_short_16: OCCFSEW2ZRIBF5G4 · pith_short_8: OCCFSEW2

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/OCCFSEW2ZRIBF5G4VEU56QSXGM \
  | 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: 70845912dacc5012f4dca929df425733107869535e8db793bfe9fd0fe8ea3402

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23a70f373be3501609aa0f2acce3d692bf4eec30fce08d2b66526a9841658f05",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2016-03-26T11:19:30Z",
    "title_canon_sha256": "7b7806baf4aa4da777ccd76b961d45f5ce15b493c74c14bcf512d6a67e8bb67d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.08101",
    "kind": "arxiv",
    "version": 1
  }
}