Pith Number

pith:5W7EAVV7

pith:2012:5W7EAVV757LGLH3UTB5B2WZFAG

not attested not anchored not stored refs pending

Active Negative Index Metamaterial Powered by an Electron Beam

A. Alu, G. Shvets, M. A. Shapiro, R. J. Temkin, S. Trendafilov, Y. Urzhumov

arxiv:1205.0043 v1 · 2012-04-30 · physics.optics · cond-mat.mtrl-sci

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5W7EAVV757LGLH3UTB5B2WZFAG}

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	2026-05-18T03:23:11.002396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edbe4056bfefd6659f74987a1d5b250184440bc3c894aa44c7f26baec03c3c6f

Aliases

arxiv: 1205.0043 · arxiv_version: 1205.0043v1 · doi: 10.48550/arxiv.1205.0043 · pith_short_12: 5W7EAVV757LG · pith_short_16: 5W7EAVV757LGLH3U · pith_short_8: 5W7EAVV7

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/5W7EAVV757LGLH3UTB5B2WZFAG \
  | 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: edbe4056bfefd6659f74987a1d5b250184440bc3c894aa44c7f26baec03c3c6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d9282b35ce09304a40161b01d885d305ecda43903a0e97f1c1a2120dcca7d80",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-04-30T22:10:34Z",
    "title_canon_sha256": "31bf2a282f052b34338f1960b927ebfa1809d4068ab7ba03fe5dca7481b5507c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.0043",
    "kind": "arxiv",
    "version": 1
  }
}