Pith Number

pith:WHSYKLMN

pith:2018:WHSYKLMNGLVUQ2HWMIKV4LFYOD

not attested not anchored not stored refs pending

Engineered diffraction gratings for acoustic cloaking

Daniel Torrent, Xinsheng Fang, Yabin Jin, Yong Li

arxiv:1810.00940 v1 · 2018-09-03 · 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{WHSYKLMNGLVUQ2HWMIKV4LFYOD}

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	2026-05-17T23:55:11.595421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1e5852d8d32eb4868f662155e2cb870fa5c4a7dc5c2b963ae2828773dd6b951

Aliases

arxiv: 1810.00940 · arxiv_version: 1810.00940v1 · doi: 10.48550/arxiv.1810.00940 · pith_short_12: WHSYKLMNGLVU · pith_short_16: WHSYKLMNGLVUQ2HW · pith_short_8: WHSYKLMN

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/WHSYKLMNGLVUQ2HWMIKV4LFYOD \
  | 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: b1e5852d8d32eb4868f662155e2cb870fa5c4a7dc5c2b963ae2828773dd6b951

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7b4ddd1d870621285c36258bb5fa26edab5ccc81948d29037a3d8a7894a29c3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2018-09-03T13:32:45Z",
    "title_canon_sha256": "30d3159466551b99afa7ba11db06096c2f37185185545e094a2abc2d2768d60d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.00940",
    "kind": "arxiv",
    "version": 1
  }
}