Pith Number

pith:SNM2PB5Z

pith:2013:SNM2PB5ZHK675C5CF5UD4GLSR4

not attested not anchored not stored refs pending

Experimentally demonstrated an unidirectional electromagnetic cloak designed by topology optimization

C. K. Ong, Fei Sun, Lu Lan, Yichao Liu, Yungui Ma

arxiv:1308.6049 v1 · 2013-08-28 · 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{SNM2PB5ZHK675C5CF5UD4GLSR4}

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	2026-05-18T01:47:57.680114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9359a787b93abdfe8ba22f683e19728f1d340a1a07c6d3f0b37716bfa663a1e1

Aliases

arxiv: 1308.6049 · arxiv_version: 1308.6049v1 · doi: 10.48550/arxiv.1308.6049 · pith_short_12: SNM2PB5ZHK67 · pith_short_16: SNM2PB5ZHK675C5C · pith_short_8: SNM2PB5Z

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/SNM2PB5ZHK675C5CF5UD4GLSR4 \
  | 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: 9359a787b93abdfe8ba22f683e19728f1d340a1a07c6d3f0b37716bfa663a1e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c74c65796a7c9b536bcf303c71fb9edb3b8fc97c2a9b1b62744dc0478eecf14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2013-08-28T03:53:47Z",
    "title_canon_sha256": "177d9a1d5d4f95d443b572787fe64c22bb5e1830828663b3ccd32c108d3d5918"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.6049",
    "kind": "arxiv",
    "version": 1
  }
}