Pith Number

pith:QWRAMOFR

pith:2014:QWRAMOFRYTIQOYP22J7F3OG4PM

not attested not anchored not stored refs pending

Metal-Free Flat Lens Using Negative Refraction by Nonlinear Four-wave Mixing

Jianjun Cao, Wenjie Wan, Xianfeng Chen, Yaming Feng, Yuanlin Zheng

arxiv:1405.4959 v2 · 2014-05-20 · 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{QWRAMOFRYTIQOYP22J7F3OG4PM}

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	2026-05-18T01:43:10.431027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85a20638b1c4d10761fad27e5db8dc7b231b5980381060295f4489d3e75a9c98

Aliases

arxiv: 1405.4959 · arxiv_version: 1405.4959v2 · doi: 10.48550/arxiv.1405.4959 · pith_short_12: QWRAMOFRYTIQ · pith_short_16: QWRAMOFRYTIQOYP2 · pith_short_8: QWRAMOFR

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/QWRAMOFRYTIQOYP22J7F3OG4PM \
  | 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: 85a20638b1c4d10761fad27e5db8dc7b231b5980381060295f4489d3e75a9c98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8efbebbf0a6b17d82799873c0889258b9eff1bc3b7ec9dcc806ca77d5296f57b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2014-05-20T05:57:16Z",
    "title_canon_sha256": "67507ce7f4ad5cb2bb484a1808eb31c190c7eb35151ae2d4398f94ec223dd6fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4959",
    "kind": "arxiv",
    "version": 2
  }
}