Pith Number

pith:PF7RKK75

pith:2018:PF7RKK75GNAGLAJVBVTXDLLLA7

not attested not anchored not stored refs pending

Reconfigurable vortex beam generator based on the Fourier transformation principle

Aiping Liu, Chang-Ling Zou, Guangcan Guo, Mengze Wu, Qin Wang, Wen He, Xifeng Ren

arxiv:1804.03750 v1 · 2018-04-10 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PF7RKK75GNAGLAJVBVTXDLLLA7}

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	2026-05-17T23:59:09.270963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

797f152bfd33406581350d6771ad6b07df8fa8c137a77a14ec4f89e57a6ebd91

Aliases

arxiv: 1804.03750 · arxiv_version: 1804.03750v1 · doi: 10.48550/arxiv.1804.03750 · pith_short_12: PF7RKK75GNAG · pith_short_16: PF7RKK75GNAGLAJV · pith_short_8: PF7RKK75

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/PF7RKK75GNAGLAJVBVTXDLLLA7 \
  | 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: 797f152bfd33406581350d6771ad6b07df8fa8c137a77a14ec4f89e57a6ebd91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb8795d4e9773dfe39c53d10ad7f71a3c23b2f4ac3f5996a19eb025d4ca3e8e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-04-10T23:47:58Z",
    "title_canon_sha256": "f939c76a602f4678f5aa7537c7eb7dfacb74c33ecedcc3862d5bbcd0720a91ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03750",
    "kind": "arxiv",
    "version": 1
  }
}