Pith Number

pith:NKP3HEZ7

pith:2017:NKP3HEZ7ICZJ4Q2QVAUVJ5ZPFT

not attested not anchored not stored refs pending

Microscopic theory of refractive index applied to metamaterials: Effective current response tensor corresponding to standard relation $n^2 = \varepsilon_{\mathrm{eff}} \mu_{\mathrm{eff}}$

G. A. H. Schober, R. Starke

arxiv:1709.08811 v3 · 2017-08-17 · physics.class-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NKP3HEZ7ICZJ4Q2QVAUVJ5ZPFT}

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	2026-05-18T00:09:19.762806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a9fb3933f40b29e4350a82954f72f2cc23b8003e602ac05a55e686778e06df7

Aliases

arxiv: 1709.08811 · arxiv_version: 1709.08811v3 · doi: 10.48550/arxiv.1709.08811 · pith_short_12: NKP3HEZ7ICZJ · pith_short_16: NKP3HEZ7ICZJ4Q2Q · pith_short_8: NKP3HEZ7

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/NKP3HEZ7ICZJ4Q2QVAUVJ5ZPFT \
  | 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: 6a9fb3933f40b29e4350a82954f72f2cc23b8003e602ac05a55e686778e06df7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd1b8e521286cfdcf3a187590ff164fd4020689a6231d492da834b1c172113f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2017-08-17T13:38:39Z",
    "title_canon_sha256": "5be8b12c2dd57831ca2d544b192fdedb75324980138f639a3b6d7f2e7d549b2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.08811",
    "kind": "arxiv",
    "version": 3
  }
}