Pith Number

pith:7BCQAP67

pith:2009:7BCQAP67OLFHMXDNWBBPAHJEKG

not attested not anchored not stored refs pending

Invisibility Cloaks Modeled by Anisotropic Metamaterials Based on Inductor-capacitor Networks

Chao Li, Fang Li, Kan Yao, Xiankun Meng, Xiao Liu

arxiv:0909.0076 v2 · 2009-09-01 · 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{7BCQAP67OLFHMXDNWBBPAHJEKG}

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	2026-05-18T02:12:12.341782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f845003fdf72ca765c6db042f01d24519761fdd3bc0407e3f3b13eb9c29b4f80

Aliases

arxiv: 0909.0076 · arxiv_version: 0909.0076v2 · doi: 10.48550/arxiv.0909.0076 · pith_short_12: 7BCQAP67OLFH · pith_short_16: 7BCQAP67OLFHMXDN · pith_short_8: 7BCQAP67

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/7BCQAP67OLFHMXDNWBBPAHJEKG \
  | 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: f845003fdf72ca765c6db042f01d24519761fdd3bc0407e3f3b13eb9c29b4f80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcf7e56219bc313968bb18c56abeb9a806b24a646e765bdc133546bb1ab12fd8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2009-09-01T03:02:41Z",
    "title_canon_sha256": "8c147b89ed13fa61f5a87f3e499c6e697de83cd63c699ed1424d6c55a725d64f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0076",
    "kind": "arxiv",
    "version": 2
  }
}