Pith Number

pith:NEX253G3

pith:2015:NEX253G32GPUJWUBRFXYPVIZPP

not attested not anchored not stored refs pending

Four-photon orbital angular momentum entanglement

B. C. Hiesmayr, M. J. A. de Dood, W. L\"offler

arxiv:1508.01480 v1 · 2015-08-06 · 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{NEX253G32GPUJWUBRFXYPVIZPP}

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	2026-05-18T01:20:29.402304Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

692faeecdbd19f44da81896f87d5197bca4835c925f5101fd3aba5e684f50c05

Aliases

arxiv: 1508.01480 · arxiv_version: 1508.01480v1 · doi: 10.48550/arxiv.1508.01480 · pith_short_12: NEX253G32GPU · pith_short_16: NEX253G32GPUJWUB · pith_short_8: NEX253G3

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/NEX253G32GPUJWUBRFXYPVIZPP \
  | 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: 692faeecdbd19f44da81896f87d5197bca4835c925f5101fd3aba5e684f50c05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37a8abacebda9dbfb2a100785247be29164df6e328236f5a70408a76ee4b8d76",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-08-06T18:21:09Z",
    "title_canon_sha256": "486692ac41692645f67e4205aaf508d4c06406ca6ca20912cd87530d3045c4ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.01480",
    "kind": "arxiv",
    "version": 1
  }
}