Pith Number

pith:XOEQWGKA

pith:2008:XOEQWGKANK2FGTGKYJGNQPPIQM

not attested not anchored not stored refs pending

Bulk Negative Index Photonic Metamaterials for Direct Laser Writing

Costas M. Soukoulis, Durdu \"O. G\"uney, Maria Kafesaki, Thomas Koschny

arxiv:0807.4560 v1 · 2008-07-29 · 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{XOEQWGKANK2FGTGKYJGNQPPIQM}

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	2026-05-18T02:15:44.401007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb890b19406ab4534ccac24cd83de8831e8ddfff2a6dc7ed2ff75251c738408a

Aliases

arxiv: 0807.4560 · arxiv_version: 0807.4560v1 · doi: 10.48550/arxiv.0807.4560 · pith_short_12: XOEQWGKANK2F · pith_short_16: XOEQWGKANK2FGTGK · pith_short_8: XOEQWGKA

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/XOEQWGKANK2FGTGKYJGNQPPIQM \
  | 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: bb890b19406ab4534ccac24cd83de8831e8ddfff2a6dc7ed2ff75251c738408a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da912215f77d1608214e3aba0687cdfcef05fd3a98ec26274c5ed4cf2f863bfa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2008-07-29T19:11:50Z",
    "title_canon_sha256": "5eb4e2b686d53b5773cf89fe14eeee443866d4f2f8d594f98e6f47996fff03fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.4560",
    "kind": "arxiv",
    "version": 1
  }
}