Pith Number

pith:5WD5HV7R

pith:2017:5WD5HV7ROOS2YWVWRFV5LYSBEW

not attested not anchored not stored refs pending

High-efficiency broad-bandwidth sub-wavelength grating based fibre-chip coupler in SOI

Shankar Kumar Selvaraja, Siddharth Nambiar

arxiv:1710.00055 v1 · 2017-09-17 · 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{5WD5HV7ROOS2YWVWRFV5LYSBEW}

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	2026-05-18T00:21:10.779661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed87d3d7f173a5ac5ab6896bd5e24125a6cef3bc0d0ee2225b372b05453c1d37

Aliases

arxiv: 1710.00055 · arxiv_version: 1710.00055v1 · doi: 10.48550/arxiv.1710.00055 · pith_short_12: 5WD5HV7ROOS2 · pith_short_16: 5WD5HV7ROOS2YWVW · pith_short_8: 5WD5HV7R

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/5WD5HV7ROOS2YWVWRFV5LYSBEW \
  | 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: ed87d3d7f173a5ac5ab6896bd5e24125a6cef3bc0d0ee2225b372b05453c1d37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23925301f8516e394cad792d4914fe4d95ea16d66fd8b2e9c785c2dcc0c76c71",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2017-09-17T11:44:51Z",
    "title_canon_sha256": "f8e943694338e2a550fc5336a0bbe67e11a82a0ae0da98bc90c961959e1da92c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.00055",
    "kind": "arxiv",
    "version": 1
  }
}