Pith Number

pith:SKMTQ2LP

pith:2021:SKMTQ2LPINEUXDJITEDH7TC4N2

not attested not anchored not stored refs pending

Ultra-low threshold lasing through phase front engineering via a metallic circular aperture

Filippos Kapsalidis, J\'er\^ome Faist, Mattias Beck, Ruijun Wang, Zhixin Wang

arxiv:2104.01370 v2 · 2021-04-03 · 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{SKMTQ2LPINEUXDJITEDH7TC4N2}

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	2026-07-05T03:52:56.795492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

929938696f43494b8d2899067fcc5c6eb5bf123e6e3cdd8b629172bad920488d

Aliases

arxiv: 2104.01370 · arxiv_version: 2104.01370v2 · doi: 10.48550/arxiv.2104.01370 · pith_short_12: SKMTQ2LPINEU · pith_short_16: SKMTQ2LPINEUXDJI · pith_short_8: SKMTQ2LP

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/SKMTQ2LPINEUXDJITEDH7TC4N2 \
  | 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: 929938696f43494b8d2899067fcc5c6eb5bf123e6e3cdd8b629172bad920488d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cdc3183bb88b9f1e1b102ddb2ef994e1cd980381b2363df45e4150673a57524",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-04-03T10:43:22Z",
    "title_canon_sha256": "f69f543c919e74741c5e28860568c023f0e7c5ad921a2c38b41b1da69c156db0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.01370",
    "kind": "arxiv",
    "version": 2
  }
}