Pith Number

pith:UW5RX7DK

pith:2019:UW5RX7DKUAWJOXWKPMNT2JZ2QF

not attested not anchored not stored refs pending

Broadband SiN asymmetric directional coupler for 840 nm operation

Guenther Koppitsch, Jochen Kraft, Martin Sagmeister, Moritz Eggeling, Paul Muellner, Rainer Hainberger, Stefan Nevlacsil

arxiv:1903.12585 v1 · 2019-03-29 · 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{UW5RX7DKUAWJOXWKPMNT2JZ2QF}

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	2026-05-17T23:49:53.658360Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5bb1bfc6aa02c975eca7b1b3d273a815cf2cf68234fe8ee14c445695616dddc

Aliases

arxiv: 1903.12585 · arxiv_version: 1903.12585v1 · doi: 10.48550/arxiv.1903.12585 · pith_short_12: UW5RX7DKUAWJ · pith_short_16: UW5RX7DKUAWJOXWK · pith_short_8: UW5RX7DK

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/UW5RX7DKUAWJOXWKPMNT2JZ2QF \
  | 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: a5bb1bfc6aa02c975eca7b1b3d273a815cf2cf68234fe8ee14c445695616dddc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49fd497dbd0766c615ab158dabcefda5620f742b8cc0f2ec65f45d3209f44484",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-03-29T15:51:38Z",
    "title_canon_sha256": "723a59b0ca911d39a84c2d0b617a756609331fdc481917fb8dbe210e6885c769"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.12585",
    "kind": "arxiv",
    "version": 1
  }
}