Pith Number

pith:Y3CQN2VK

pith:2018:Y3CQN2VKBVNTALS22JSPNGS76G

not attested not anchored not stored refs pending

On-chip Rotated Polarization Directional Coupler Fabricated by Femtosecond Laser Direct Writing

Ci-Yu Wang, Jun Gao, Xian-Min Jin

arxiv:1812.08240 v1 · 2018-12-19 · quant-ph · physics.app-ph · 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{Y3CQN2VKBVNTALS22JSPNGS76G}

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	2026-05-17T23:57:51.852491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6c506eaaa0d5b302e5ad264f69a5ff1bdf7a00aa46a74af182000674648e470

Aliases

arxiv: 1812.08240 · arxiv_version: 1812.08240v1 · doi: 10.48550/arxiv.1812.08240 · pith_short_12: Y3CQN2VKBVNT · pith_short_16: Y3CQN2VKBVNTALS2 · pith_short_8: Y3CQN2VK

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/Y3CQN2VKBVNTALS22JSPNGS76G \
  | 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: c6c506eaaa0d5b302e5ad264f69a5ff1bdf7a00aa46a74af182000674648e470

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d40db9c37a13b75b7227f8d3d0fa163a150c069706209439cfe954c0282d351c",
    "cross_cats_sorted": [
      "physics.app-ph",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-12-19T20:56:27Z",
    "title_canon_sha256": "46bf6a9d5031d2bbae85b0b46c0792e3ed248f686aa4e1a93ea215279824bc66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.08240",
    "kind": "arxiv",
    "version": 1
  }
}