Pith Number

pith:P4OEBJAT

pith:2018:P4OEBJAT552UEA7E5U26NAWJCH

not attested not anchored not stored refs pending

Compact Acoustic Retroreflector Based on A Mirrored Luneburg Lens

Chen Shen, Huanyang Chen, Junfei Li, Steven A. Cummer, Yadong Xu, Yangbo Xie, Yangyang Fu

arxiv:1801.06775 v1 · 2018-01-21 · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P4OEBJAT552UEA7E5U26NAWJCH}

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	2026-05-18T00:02:35.786486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f1c40a413ef754203e4ed35e682c911c2652662566a19a78790d33bcc496fa9

Aliases

arxiv: 1801.06775 · arxiv_version: 1801.06775v1 · doi: 10.48550/arxiv.1801.06775 · pith_short_12: P4OEBJAT552U · pith_short_16: P4OEBJAT552UEA7E · pith_short_8: P4OEBJAT

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/P4OEBJAT552UEA7E5U26NAWJCH \
  | 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: 7f1c40a413ef754203e4ed35e682c911c2652662566a19a78790d33bcc496fa9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43d33bd77364b758eea5ddc61a524d6ab2e8deef55b03f9d51f66923ea5599a2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2018-01-21T06:37:59Z",
    "title_canon_sha256": "12641f337c591b68d5f8ead3b6709f46a5f158c8c1b5aa8e91848ce974082ce8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.06775",
    "kind": "arxiv",
    "version": 1
  }
}