Pith Number

pith:IN325CYC

pith:2006:IN325CYCB7ZTVKORS3OQQY3WOW

not attested not anchored not stored refs pending

Comment on "Negative Refractive Index in Artificial Metamaterials" [A. N. Grigorenko, Opt. Lett., 31, 2483 (2006)]

Alexander V. Kildishev, Do-Hoon Kwon, Douglas Werner, Uday K. Chettiar, Vladimir M. Shalaev, Vladimir P. Drachev

arxiv:physics/0609234 v1 · 2006-09-26 · 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{IN325CYCB7ZTVKORS3OQQY3WOW}

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	2026-07-04T17:02:47.230605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4377ae8b020ff33aa9d196dd086376758e2afe89fba3b6ea948db7f3d9512835

Aliases

arxiv: physics/0609234 · arxiv_version: physics/0609234v1 · doi: 10.48550/arxiv.physics/0609234 · pith_short_12: IN325CYCB7ZT · pith_short_16: IN325CYCB7ZTVKOR · pith_short_8: IN325CYC

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/IN325CYCB7ZTVKORS3OQQY3WOW \
  | 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: 4377ae8b020ff33aa9d196dd086376758e2afe89fba3b6ea948db7f3d9512835

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "490d13b04d07c09bf6a6dc70d0e5cb206798270fb6e62d46442e4b01e4e8f65a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.optics",
    "submitted_at": "2006-09-26T21:25:39Z",
    "title_canon_sha256": "cb33df874e63dd04403bb8c1c76eac972758e5e8ba974a6dbb7a8e0e50c3f9e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0609234",
    "kind": "arxiv",
    "version": 1
  }
}