Pith Number

pith:VVEUMLLT

pith:2014:VVEUMLLTB6VTY32RPA5HGGCRVV

not attested not anchored not stored refs pending

Negative refractive index and higher-order harmonics in layered metallodielectric optical metamaterials

Albert Polman, Ewold Verhagen, James Parsons, Ruben Maas

arxiv:1404.4707 v1 · 2014-04-18 · 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{VVEUMLLTB6VTY32RPA5HGGCRVV}

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	2026-05-18T02:53:55.286734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad49462d730fab3c6f51783a731851ad7512aa3da6196ab44d964c7a96b17fbc

Aliases

arxiv: 1404.4707 · arxiv_version: 1404.4707v1 · doi: 10.48550/arxiv.1404.4707 · pith_short_12: VVEUMLLTB6VT · pith_short_16: VVEUMLLTB6VTY32R · pith_short_8: VVEUMLLT

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/VVEUMLLTB6VTY32RPA5HGGCRVV \
  | 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: ad49462d730fab3c6f51783a731851ad7512aa3da6196ab44d964c7a96b17fbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cd8e7ea9fc447db13f569b7e84e4c495c806b9b2ceb904f2648d6c17e201e22",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2014-04-18T07:06:45Z",
    "title_canon_sha256": "bfe96f90c69e8a03efe83cfced07c199622bc85cc50d7216859e147e5afa4b66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.4707",
    "kind": "arxiv",
    "version": 1
  }
}