Pith Number

pith:CJE3CUZB

pith:2018:CJE3CUZBNWJLC6MGQKV5INELVY

not attested not anchored not stored refs pending

Systematic design and realization of double-negative acoustic metamaterials by topology optimization

Chuanzeng Zhang, Hao-Wen Dong, Li Cheng, Peijun Wei, Sheng-Dong Zhao, Yue-Sheng Wang

arxiv:1811.03228 v1 · 2018-11-08 · physics.app-ph · 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{CJE3CUZBNWJLC6MGQKV5INELVY}

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	2026-05-17T23:44:42.890281Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1249b153216d92b1798682abd4348bae3b470730bd55730339471ba1be41a057

Aliases

arxiv: 1811.03228 · arxiv_version: 1811.03228v1 · doi: 10.48550/arxiv.1811.03228 · pith_short_12: CJE3CUZBNWJL · pith_short_16: CJE3CUZBNWJLC6MG · pith_short_8: CJE3CUZB

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/CJE3CUZBNWJLC6MGQKV5INELVY \
  | 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: 1249b153216d92b1798682abd4348bae3b470730bd55730339471ba1be41a057

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae7f12b9abe9f606701d6eff29bc4ee5f04f8be4ce6065f01c44aee82069af44",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2018-11-08T02:35:17Z",
    "title_canon_sha256": "706271f52b027b2813af29cf7454938254686a0c3662307547abf336aca73afb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.03228",
    "kind": "arxiv",
    "version": 1
  }
}