Pith Number

pith:EM2ZESWY

pith:2023:EM2ZESWYLN7FMHIZTXVCP36E4S

not attested not anchored not stored refs pending

B-spline freeform surface tailoring for prescribed irradiance based on differentiable ray-tracing

Haoqiang Wang, Hongtao Li, Yanjun Han, Yi Luo, Yunpeng Xu, Zihan Zang

arxiv:2303.17108 v1 · 2023-03-30 · physics.optics · cs.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EM2ZESWYLN7FMHIZTXVCP36E4S}

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	2026-07-05T05:56:19.648658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2335924ad85b7e561d199dea27efc4e4a432cce9425197c8c8e93e5094becec6

Aliases

arxiv: 2303.17108 · arxiv_version: 2303.17108v1 · doi: 10.48550/arxiv.2303.17108 · pith_short_12: EM2ZESWYLN7F · pith_short_16: EM2ZESWYLN7FMHIZ · pith_short_8: EM2ZESWY

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/EM2ZESWYLN7FMHIZTXVCP36E4S \
  | 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: 2335924ad85b7e561d199dea27efc4e4a432cce9425197c8c8e93e5094becec6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59176c381cb835780ebdeb0bba917c60c82f1e29aa88b9e0aa069aeec5fd220f",
    "cross_cats_sorted": [
      "cs.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2023-03-30T02:48:14Z",
    "title_canon_sha256": "c9f274779b33cf58e635c4d18a722ea98683580d7a121c6d99b3b909ffd940b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.17108",
    "kind": "arxiv",
    "version": 1
  }
}