Pith Number

pith:EIBP4E7D

pith:2018:EIBP4E7DY35TQORGP7AVTPYUSF

not attested not anchored not stored refs pending

First-Principles Threshold Calculation of Photonic Crystal Surface-Emitting Lasers Using Rigorous Coupled Wave Analysis

Akhil Raj Kumar Kalapala, Alex Y. Song, Shanhui Fan, Weidong Zhou

arxiv:1806.07997 v1 · 2018-06-20 · 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{EIBP4E7DY35TQORGP7AVTPYUSF}

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	2026-05-18T00:09:35.471867Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2202fe13e3c6fb383a267fc159bf14916829c35d4cb5c92fcd855a37d3bc357f

Aliases

arxiv: 1806.07997 · arxiv_version: 1806.07997v1 · doi: 10.48550/arxiv.1806.07997 · pith_short_12: EIBP4E7DY35T · pith_short_16: EIBP4E7DY35TQORG · pith_short_8: EIBP4E7D

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/EIBP4E7DY35TQORGP7AVTPYUSF \
  | 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: 2202fe13e3c6fb383a267fc159bf14916829c35d4cb5c92fcd855a37d3bc357f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc48dcd63d75acab58dc012e305fa186b5ea5b65a6d75ecaafe152796b408287",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-06-20T21:35:35Z",
    "title_canon_sha256": "783a427df6e455979d5ee59e927ec003191ccc9733dff7c142c6b9823dc7aca2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07997",
    "kind": "arxiv",
    "version": 1
  }
}