Pith Number

pith:A6PVH3FH

pith:2007:A6PVH3FHEA2EA2K5FSPAIIDPTH

not attested not anchored not stored refs pending

Measuring two-photon orbital angular momentum entanglement

A. Bramon, A. Pic\'on, G. F. Calvo

arxiv:0704.1506 v2 · 2007-04-12 · 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{A6PVH3FHEA2EA2K5FSPAIIDPTH}

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	2026-05-18T04:30:03.143041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

079f53eca7203440695d2c9e04206f99c07236773d1591d8fcc2609e68147193

Aliases

arxiv: 0704.1506 · arxiv_version: 0704.1506v2 · doi: 10.48550/arxiv.0704.1506 · pith_short_12: A6PVH3FHEA2E · pith_short_16: A6PVH3FHEA2EA2K5 · pith_short_8: A6PVH3FH

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/A6PVH3FHEA2EA2K5FSPAIIDPTH \
  | 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: 079f53eca7203440695d2c9e04206f99c07236773d1591d8fcc2609e68147193

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f38dc5bb3c77f6f5d2f57cf709d5e6a139ecccec5331869a6be109799c755642",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-04-12T19:49:15Z",
    "title_canon_sha256": "8cf495284771e4fe93fa8b1cd6336045a02f16e6dc29c81e305dfcfaffed771a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.1506",
    "kind": "arxiv",
    "version": 2
  }
}