Pith Number

pith:UPVUJ72P

pith:2019:UPVUJ72PJQCEGQLF3JJGLIOZ42

not attested not anchored not stored refs pending

Broadband mid-infrared perfect absorber using fractal Gosper curve

Alexander O. Govorov, Cuo Wu, Haining Ji, Jiang Wu, Jihua Zou, Le Chang, Peng Yu, Wen Du, Wenhao Wang, Xiaobin Niu, Xin Tong, Yongjun Huang, Zhiming Wang

arxiv:1908.06635 v2 · 2019-08-19 · physics.optics · physics.app-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{UPVUJ72PJQCEGQLF3JJGLIOZ42}

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	2026-07-05T00:41:35.455499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3eb44ff4f4c04434165da5265a1d9e6b7e17d4c8dedfa5469cd6f81bfa27353

Aliases

arxiv: 1908.06635 · arxiv_version: 1908.06635v2 · doi: 10.48550/arxiv.1908.06635 · pith_short_12: UPVUJ72PJQCE · pith_short_16: UPVUJ72PJQCEGQLF · pith_short_8: UPVUJ72P

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/UPVUJ72PJQCEGQLF3JJGLIOZ42 \
  | 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: a3eb44ff4f4c04434165da5265a1d9e6b7e17d4c8dedfa5469cd6f81bfa27353

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fcb4e73c94c38a4837abe04443a2f6416dd014cba910180c4cf62317dc6633b",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-08-19T08:14:07Z",
    "title_canon_sha256": "aff31facaa14cb40d1fabc190b01257baa2cd207777c8f2b869b1357f86275ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06635",
    "kind": "arxiv",
    "version": 2
  }
}