Pith Number

pith:55VSRUQH

pith:2020:55VSRUQH57WEULDDCEWBHEU4AV

not attested not anchored not stored refs pending

Mid-infrared quantum cascade laser frequency combs based on multi-section waveguides

Filippos Kapsalidis, Jerome Faist, Mattias Beck, Mehran Shahmohammadi, Philipp Taschler, Ruijun Wang

arxiv:2010.14643 v1 · 2020-10-27 · 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{55VSRUQH57WEULDDCEWBHEU4AV}

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	2026-07-05T01:55:14.233024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef6b28d207efec4a2c63112c13929c05424ff4b51ca88c88794288b08237105f

Aliases

arxiv: 2010.14643 · arxiv_version: 2010.14643v1 · doi: 10.48550/arxiv.2010.14643 · pith_short_12: 55VSRUQH57WE · pith_short_16: 55VSRUQH57WEULDD · pith_short_8: 55VSRUQH

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/55VSRUQH57WEULDDCEWBHEU4AV \
  | 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: ef6b28d207efec4a2c63112c13929c05424ff4b51ca88c88794288b08237105f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfae74567dbecf0a7064ce35207f3369845471e4f102c751192f56abf4869fc9",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2020-10-27T22:09:09Z",
    "title_canon_sha256": "5b596febd071f1a9bd2aee66bad57ca56cd6fc84549ceb6bdbc2a5a1593fec36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.14643",
    "kind": "arxiv",
    "version": 1
  }
}