Pith Number

pith:FJXDQ3Y6

pith:2012:FJXDQ3Y6OFRWBXLPE6NW7LUFP6

not attested not anchored not stored refs pending

Double-negative acoustic metamaterial based on hollow steel tube meta-atom

Changlin Ding, Chunrong Luo, Hongcheng Zeng, Huaijun Chen, Xiaopeng Zhao

arxiv:1209.6188 v1 · 2012-09-27 · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FJXDQ3Y6OFRWBXLPE6NW7LUFP6}

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	2026-05-18T01:54:13.367486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a6e386f1e716360dd6f279b6fae857f832dcaa24731107be7902682e84292ee

Aliases

arxiv: 1209.6188 · arxiv_version: 1209.6188v1 · doi: 10.48550/arxiv.1209.6188 · pith_short_12: FJXDQ3Y6OFRW · pith_short_16: FJXDQ3Y6OFRWBXLP · pith_short_8: FJXDQ3Y6

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/FJXDQ3Y6OFRWBXLPE6NW7LUFP6 \
  | 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: 2a6e386f1e716360dd6f279b6fae857f832dcaa24731107be7902682e84292ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0b50d2db10ddcca7c8c5b40f5ba2b41c19f0cc275c8ac20728b3a7558b1292e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2012-09-27T11:12:19Z",
    "title_canon_sha256": "7bf20e0155a075f3b5318db151ccff1636014c10cc1c3930c15d65bc159065c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.6188",
    "kind": "arxiv",
    "version": 1
  }
}