Pith Number

pith:LEYL7HNJ

pith:2018:LEYL7HNJ5CVDAIV3MRB7AGSUXB

not attested not anchored not stored refs pending

Direct Observation of Topological Edge States in Silicon Photonic Crystals: Spin, Dispersion, and Chiral Routing

Ewold Verhagen, Filippo Alpeggiani, L. Kuipers, Nikhil Parappurath

arxiv:1811.10739 v1 · 2018-11-26 · 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{LEYL7HNJ5CVDAIV3MRB7AGSUXB}

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	2026-05-17T23:59:47.667502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5930bf9da9e8aa3022bb6443f01a54b861315edb7c4cf305e1dcb433c6e5c4dd

Aliases

arxiv: 1811.10739 · arxiv_version: 1811.10739v1 · doi: 10.48550/arxiv.1811.10739 · pith_short_12: LEYL7HNJ5CVD · pith_short_16: LEYL7HNJ5CVDAIV3 · pith_short_8: LEYL7HNJ

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/LEYL7HNJ5CVDAIV3MRB7AGSUXB \
  | 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: 5930bf9da9e8aa3022bb6443f01a54b861315edb7c4cf305e1dcb433c6e5c4dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56161fbdbdac9d16bba01a0ea60997391eff86cfa3e0cff4ca38d11f26433935",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-11-26T23:20:49Z",
    "title_canon_sha256": "cd4239013996eb49241892f3e7e82f7b867c3e257c24a51809706624f87e7b87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.10739",
    "kind": "arxiv",
    "version": 1
  }
}