Pith Number

pith:EPH3N2OD

pith:2019:EPH3N2ODIT44E46XVXRNFDFCSU

not attested not anchored not stored refs pending

Idealised EPR states from non-phase matched parametric down conversion

A. Cavanna, C. Okoth, E. Kovlakov, F. Boensel, M. V. Chekhova, S. P. Kulik, S. Straupe

arxiv:1907.09888 v1 · 2019-07-23 · 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{EPH3N2ODIT44E46XVXRNFDFCSU}

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	2026-07-05T00:34:42.038041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23cfb6e9c344f9c273d7ade2d28ca29529b5953ace0e923910d57687ae10a521

Aliases

arxiv: 1907.09888 · arxiv_version: 1907.09888v1 · doi: 10.48550/arxiv.1907.09888 · pith_short_12: EPH3N2ODIT44 · pith_short_16: EPH3N2ODIT44E46X · pith_short_8: EPH3N2OD

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/EPH3N2ODIT44E46XVXRNFDFCSU \
  | 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: 23cfb6e9c344f9c273d7ade2d28ca29529b5953ace0e923910d57687ae10a521

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6c839f4e437f7d3a0c11738f8f828d1e43b1ebd9a7095a87ebec2ca95995928",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-07-23T14:06:14Z",
    "title_canon_sha256": "7acde413a130312da2fd7965f9fe385f2fb6cdf1f229cd42816d6665776598d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09888",
    "kind": "arxiv",
    "version": 1
  }
}