Pith Number

pith:AUNFVF2H

pith:2018:AUNFVF2HW6QNM37ZMIH5PMLJBD

not attested not anchored not stored refs pending

Inverse design and demonstration of broadband grating couplers

Alexander Y. Piggott, Dries Vercruysse, Jelena Vu\v{c}kovi\'c, Jinhie Skarda, Ki Youl Yang, Logan Su, Neil V. Sapra

arxiv:1808.07630 v2 · 2018-08-23 · 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{AUNFVF2HW6QNM37ZMIH5PMLJBD}

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	2026-05-17T23:57:02.700839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

051a5a9747b7a0d66ff9620fd7b16908e3ae2b6bed79dacb7cf52b73d1fcb3d3

Aliases

arxiv: 1808.07630 · arxiv_version: 1808.07630v2 · doi: 10.48550/arxiv.1808.07630 · pith_short_12: AUNFVF2HW6QN · pith_short_16: AUNFVF2HW6QNM37Z · pith_short_8: AUNFVF2H

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/AUNFVF2HW6QNM37ZMIH5PMLJBD \
  | 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: 051a5a9747b7a0d66ff9620fd7b16908e3ae2b6bed79dacb7cf52b73d1fcb3d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "314aa710783a3174f38bbea60f99d472fc0ef7af18ff00dfec09c812597cacde",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2018-08-23T04:27:23Z",
    "title_canon_sha256": "3020233be8f960e12bf71ea2e1aff1bd3d4ee62587bdfe611d889252f832bc1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07630",
    "kind": "arxiv",
    "version": 2
  }
}