Pith Number

pith:WDCYRNLO

pith:2025:WDCYRNLOOLPK7CDDWSI36U2P26

not attested not anchored not stored refs pending

Certifying spatial entanglement between non-degenerate photon pairs with a camera

Emma Brambila, Hugo Defienne, Markus Gr\"afe, Raphael Guitter, Ren\'e Sondenheimer

arxiv:2506.14300 v1 · 2025-06-17 · 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{WDCYRNLOOLPK7CDDWSI36U2P26}

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	2026-07-05T11:55:40.828119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0c588b56e72deaf8863b491bf534fd798a66fd38357147bfe7f6ec043a8da52

Aliases

arxiv: 2506.14300 · arxiv_version: 2506.14300v1 · doi: 10.48550/arxiv.2506.14300 · pith_short_12: WDCYRNLOOLPK · pith_short_16: WDCYRNLOOLPK7CDD · pith_short_8: WDCYRNLO

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/WDCYRNLOOLPK7CDDWSI36U2P26 \
  | 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: b0c588b56e72deaf8863b491bf534fd798a66fd38357147bfe7f6ec043a8da52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "464cf6fcb6ce43ec223124a52f8c160b8e41672003a9b422060e0948a8341549",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-06-17T08:24:34Z",
    "title_canon_sha256": "61e29fd3e3a304fbfeec3e23a4fd975798ed9841cba618029ccf7e800873163e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.14300",
    "kind": "arxiv",
    "version": 1
  }
}