Pith Number

pith:PDGRV3O4

pith:2021:PDGRV3O4KKUGOW7PDBL6TDWFLY

not attested not anchored not stored refs pending

Non-redundant optical phased array

Daiji Yamashita, Kento Komatsu, Ryota Tanomura, Shun Takahashi, Taichiro Fukui, Takuo Tanemura, Yoshiaki Nakano

arxiv:2108.09665 v1 · 2021-08-22 · 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{PDGRV3O4KKUGOW7PDBL6TDWFLY}

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	2026-07-05T05:08:50.157997Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78cd1aeddc52a8675bef1857e98ec55e2e69f5bbc02f70d459b06a9f2cef103e

Aliases

arxiv: 2108.09665 · arxiv_version: 2108.09665v1 · doi: 10.48550/arxiv.2108.09665 · pith_short_12: PDGRV3O4KKUG · pith_short_16: PDGRV3O4KKUGOW7P · pith_short_8: PDGRV3O4

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/PDGRV3O4KKUGOW7PDBL6TDWFLY \
  | 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: 78cd1aeddc52a8675bef1857e98ec55e2e69f5bbc02f70d459b06a9f2cef103e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "757a74481a86c1752f6fa07305d66c02cbc4cdd9f06ddd6401b137bc4fa6312d",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-08-22T08:29:28Z",
    "title_canon_sha256": "16fac2177e1ddc847e95e3d477c7aba86dc7b7e8c49abe151132b67e3fb515f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.09665",
    "kind": "arxiv",
    "version": 1
  }
}