Pith Number

pith:BGBI7BON

pith:2012:BGBI7BONSXNFCKY5UC4X6QX3SN

not attested not anchored not stored refs pending

Optical metamaterials with different metals

Costas M. Soukoulis, Maria Kafesaki, Nian-Hai Shen, Thomas Koschny

arxiv:1209.5777 v1 · 2012-09-25 · 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{BGBI7BONSXNFCKY5UC4X6QX3SN}

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	2026-05-18T03:44:46.459456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09828f85cd95da512b1da0b97f42fb935af20b31814d4ef72b55305975f0e3ec

Aliases

arxiv: 1209.5777 · arxiv_version: 1209.5777v1 · doi: 10.48550/arxiv.1209.5777 · pith_short_12: BGBI7BONSXNF · pith_short_16: BGBI7BONSXNFCKY5 · pith_short_8: BGBI7BON

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/BGBI7BONSXNFCKY5UC4X6QX3SN \
  | 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: 09828f85cd95da512b1da0b97f42fb935af20b31814d4ef72b55305975f0e3ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9425991b6c11c4f77626fa0a3a48eee2a9607f8f2a0e06142493171066f26f30",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-09-25T21:29:05Z",
    "title_canon_sha256": "b31ba98f16f4c6572c4faf4d66ecb93ecbcb632c3906ae6f0221c53191b06895"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5777",
    "kind": "arxiv",
    "version": 1
  }
}