Pith Number

pith:E4VR5TDD

pith:2014:E4VR5TDD72LUAOFNLFDYP7TNHJ

not attested not anchored not stored refs pending

Directional out-coupling from active hyperbolic metamaterials

Evgenii Narimanov, Harish N.S. Krishnamoorthy, Tal Galfsky, Vinod M. Menon, Ward D. Newman, Zubin Jacob

arxiv:1404.1535 v1 · 2014-04-06 · 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{E4VR5TDD72LUAOFNLFDYP7TNHJ}

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	2026-05-18T02:54:46.060343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

272b1ecc63fe974038ad594787fe6d3a74feb840a374e9bb21eba225ffc75ba4

Aliases

arxiv: 1404.1535 · arxiv_version: 1404.1535v1 · doi: 10.48550/arxiv.1404.1535 · pith_short_12: E4VR5TDD72LU · pith_short_16: E4VR5TDD72LUAOFN · pith_short_8: E4VR5TDD

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/E4VR5TDD72LUAOFNLFDYP7TNHJ \
  | 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: 272b1ecc63fe974038ad594787fe6d3a74feb840a374e9bb21eba225ffc75ba4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d776904347b28a72b2e368b29be85e9faa598b9abec2c4e9fee421323bbecd53",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2014-04-06T01:16:29Z",
    "title_canon_sha256": "3b792ffdc5986fa109cc2b315c147f648f2c83cf5c9675cfecbf6509763f42ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.1535",
    "kind": "arxiv",
    "version": 1
  }
}