Pith Number

pith:OGWGSXCA

pith:2012:OGWGSXCAA3MCKKIWFE5CIO4EUE

not attested not anchored not stored refs pending

High spatial entanglement via chirped quasi-phase-matched optical parametric down-conversion

Jan Pe\v{r}ina Jr, Ji\v{r}\'i Svozil\'ik, Juan P. Torres

arxiv:1208.4531 v2 · 2012-08-22 · 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{OGWGSXCAA3MCKKIWFE5CIO4EUE}

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	2026-05-18T03:40:38.373274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71ac695c4006d8252916293a243b84a13a9c183e5c1264b557a58548e2756ea5

Aliases

arxiv: 1208.4531 · arxiv_version: 1208.4531v2 · doi: 10.48550/arxiv.1208.4531 · pith_short_12: OGWGSXCAA3MC · pith_short_16: OGWGSXCAA3MCKKIW · pith_short_8: OGWGSXCA

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/OGWGSXCAA3MCKKIWFE5CIO4EUE \
  | 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: 71ac695c4006d8252916293a243b84a13a9c183e5c1264b557a58548e2756ea5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b147f54f2024db9ea1e02f659bfe30c060c8fe4a64cbcb661d4e40ea4ac3a86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-08-22T15:35:27Z",
    "title_canon_sha256": "70066d2d583631850dc602eed6bebba567d4be0b59459427b1a313f715b7339b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4531",
    "kind": "arxiv",
    "version": 2
  }
}