Pith Number

pith:VMRXHO4L

pith:2017:VMRXHO4L3E466MA72DN4CARDIA

not attested not anchored not stored refs pending

Negative refraction based on purely imaginary conjugate metamaterials

Huanyang Chen, Yadong Xu, Yangyang Fu

arxiv:1708.02358 v1 · 2017-08-08 · 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{VMRXHO4L3E466MA72DN4CARDIA}

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	2026-05-18T00:38:24.606637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab2373bb8bd939ef301fd0dbc102234012c575230d02ae20968c21ac90f03254

Aliases

arxiv: 1708.02358 · arxiv_version: 1708.02358v1 · doi: 10.48550/arxiv.1708.02358 · pith_short_12: VMRXHO4L3E46 · pith_short_16: VMRXHO4L3E466MA7 · pith_short_8: VMRXHO4L

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/VMRXHO4L3E466MA72DN4CARDIA \
  | 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: ab2373bb8bd939ef301fd0dbc102234012c575230d02ae20968c21ac90f03254

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53527cbec90eb8735ea9f15aa362d779ae09044e8412388d38383f41a3139402",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-08-08T02:43:16Z",
    "title_canon_sha256": "d383e817cd36d9c354913dad42525ac38a48e1ec5ab8536ba7a6a4c8c67bdbed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.02358",
    "kind": "arxiv",
    "version": 1
  }
}