Pith Number

pith:VRIDSVJW

pith:2013:VRIDSVJWTJE4N3IJCY4KJIJ6E3

not attested not anchored not stored refs pending

Measuring entanglement of photons produced by a pulsed source

Alejandro A. Hnilo, Marcelo G. Kovalsky, M\'onica B. Ag\"uero

arxiv:1312.2515 v1 · 2013-12-09 · physics.optics · 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{VRIDSVJWTJE4N3IJCY4KJIJ6E3}

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	2026-05-18T01:45:57.094588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac503955369a49c6ed091638a4a13e26e109a1fdc8a8f499ea517aed206ff0c5

Aliases

arxiv: 1312.2515 · arxiv_version: 1312.2515v1 · doi: 10.48550/arxiv.1312.2515 · pith_short_12: VRIDSVJWTJE4 · pith_short_16: VRIDSVJWTJE4N3IJ · pith_short_8: VRIDSVJW

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/VRIDSVJWTJE4N3IJCY4KJIJ6E3 \
  | 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: ac503955369a49c6ed091638a4a13e26e109a1fdc8a8f499ea517aed206ff0c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b15cd7d317397cf0e54284ef16d7b56e1c6f719c6b5f2d1ebc4c5266e00214c",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2013-12-09T17:04:52Z",
    "title_canon_sha256": "8825117c1271a65b6be4ba5675fc4de9d257a3df82a8e2396d9d92adea091b9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.2515",
    "kind": "arxiv",
    "version": 1
  }
}