Pith Number

pith:WULWUCC4

pith:2013:WULWUCC4NRMV5FIO3KTMQUB2G4

not attested not anchored not stored refs pending

Broadband Epsilon-Near-Zero Metamaterials with Step-Like Metal-Dielectric Multilayer Structures

Jie Gao, Lei Sun, Xiaodong Yang

arxiv:1304.6634 v1 · 2013-04-24 · 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{WULWUCC4NRMV5FIO3KTMQUB2G4}

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	2026-05-18T01:50:22.458940Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5176a085c6c595e950edaa6c8503a37328ddfc0aedb32b2964f11f622d41e5e

Aliases

arxiv: 1304.6634 · arxiv_version: 1304.6634v1 · doi: 10.48550/arxiv.1304.6634 · pith_short_12: WULWUCC4NRMV · pith_short_16: WULWUCC4NRMV5FIO · pith_short_8: WULWUCC4

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/WULWUCC4NRMV5FIO3KTMQUB2G4 \
  | 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: b5176a085c6c595e950edaa6c8503a37328ddfc0aedb32b2964f11f622d41e5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "438e70456fed356390c1ce9a55857d0fa9439c81635079c9e36857fe7169442a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2013-04-24T15:48:49Z",
    "title_canon_sha256": "609e023ef45839cf81f06bbd81146fac30c6a2cb923c361ef7b7304cd249b927"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6634",
    "kind": "arxiv",
    "version": 1
  }
}