Pith Number

pith:NPPPGGKM

pith:2019:NPPPGGKMLPL5UFMIQCKVYXD7WA

not attested not anchored not stored refs pending

Implementation of on-chip multi-channel focusing wavelength demultiplexing with regularized digital metamaterials

Dingbo Chen, Jie Huang, Jingjing Zhang, Jingmin Han, Junbo Yang, Linmei Liang, Wei Bai, Xin He, Yunxin Han, Zhaojian Zhang

arxiv:1909.11136 v1 · 2019-08-10 · physics.app-ph · 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{NPPPGGKMLPL5UFMIQCKVYXD7WA}

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	2026-07-05T00:07:08.665083Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bdef3194c5bd7da158880955c5c7fb00d3bfb85405c5f6cfcf5a89a8630bbeb

Aliases

arxiv: 1909.11136 · arxiv_version: 1909.11136v1 · doi: 10.48550/arxiv.1909.11136 · pith_short_12: NPPPGGKMLPL5 · pith_short_16: NPPPGGKMLPL5UFMI · pith_short_8: NPPPGGKM

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/NPPPGGKMLPL5UFMIQCKVYXD7WA \
  | 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: 6bdef3194c5bd7da158880955c5c7fb00d3bfb85405c5f6cfcf5a89a8630bbeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b79749fe9f5de6b61a36f6e792cbe70ac67a3efbeb5a140f8c8a42737c66a047",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2019-08-10T07:26:09Z",
    "title_canon_sha256": "9512a76aa561f997eb20deefec26d3a6654ea1e450800fbdcb191de77781faf7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.11136",
    "kind": "arxiv",
    "version": 1
  }
}