Pith Number

pith:G4SXGJQP

pith:2019:G4SXGJQPBN6BJMNDK2QGVUMXTE

not attested not anchored not stored refs pending

High-index dielectric metasurfaces performing mathematical operations

A. Femius Koenderink, Albert Polman, Andrea Al\`u, Andrea Cordaro, Dimitrios Sounas, Hoyeong Kwon

arxiv:1903.08402 v1 · 2019-03-20 · 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{G4SXGJQPBN6BJMNDK2QGVUMXTE}

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	2026-07-05T00:21:05.943808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

372573260f0b7c14b1a356a06ad197991b6825a74f044ebd0c0f54d0a2bb21aa

Aliases

arxiv: 1903.08402 · arxiv_version: 1903.08402v1 · doi: 10.48550/arxiv.1903.08402 · pith_short_12: G4SXGJQPBN6B · pith_short_16: G4SXGJQPBN6BJMND · pith_short_8: G4SXGJQP

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/G4SXGJQPBN6BJMNDK2QGVUMXTE \
  | 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: 372573260f0b7c14b1a356a06ad197991b6825a74f044ebd0c0f54d0a2bb21aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acfcc8c328887f6cbdf29ef458c50665e8e41b6eb5ab940c4de5dd18c44b8cfb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-03-20T09:32:32Z",
    "title_canon_sha256": "be15d43aadcffdf34e0189596b62a25a6af10fb2fd698efee698cc7062a7906f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.08402",
    "kind": "arxiv",
    "version": 1
  }
}