Pith Number

pith:EMKWLIFE

pith:2019:EMKWLIFE2CPPJ2AZQCQDN4LUIO

not attested not anchored not stored refs pending

Second harmonic and sum-frequency generations from a silicon metasurface integrated with a two-dimensional material

Hanlin Fang, Jianlin Zhao, Juntao Li, Liang Fang, Qingchen Yuan, Tao Wang, Wanqi Jie, Xuetao Gan

arxiv:1904.06027 v2 · 2019-04-12 · 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{EMKWLIFE2CPPJ2AZQCQDN4LUIO}

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	2026-05-17T23:48:04.375063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

231565a0a4d09ef4e81980a036f1744393debf65945a43dccd9144489d785c94

Aliases

arxiv: 1904.06027 · arxiv_version: 1904.06027v2 · doi: 10.48550/arxiv.1904.06027 · pith_short_12: EMKWLIFE2CPP · pith_short_16: EMKWLIFE2CPPJ2AZ · pith_short_8: EMKWLIFE

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/EMKWLIFE2CPPJ2AZQCQDN4LUIO \
  | 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: 231565a0a4d09ef4e81980a036f1744393debf65945a43dccd9144489d785c94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fdc5531e546cb073c886e0676ef0aa288f5e1d56b2e400d3631391092178517",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-04-12T04:24:55Z",
    "title_canon_sha256": "31f3742263017974f4e389bb04d3bda2d850ff0b8e32697eb6efdd8819d3c4c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06027",
    "kind": "arxiv",
    "version": 2
  }
}