Pith Number

pith:WTMLHNYC

pith:2025:WTMLHNYCTS2XHX2I2MVDEJQBO7

not attested not anchored not stored refs pending

Free-Running Ring Quantum Cascade Laser with 50 kHz Linewidth

Alexandre Parriaux, Ina Heckelmann, J\'er\^ome Faist, Mathieu Bertrand, Mattias Beck, Thomas S\"udmeyer

arxiv:2512.14433 v2 · 2025-12-16 · 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{WTMLHNYCTS2XHX2I2MVDEJQBO7}

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	2026-05-20T00:05:39.197915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4d8b3b7029cb573df48d32a32260177c7a22f438f86babe767281660303386b

Aliases

arxiv: 2512.14433 · arxiv_version: 2512.14433v2 · doi: 10.48550/arxiv.2512.14433 · pith_short_12: WTMLHNYCTS2X · pith_short_16: WTMLHNYCTS2XHX2I · pith_short_8: WTMLHNYC

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/WTMLHNYCTS2XHX2I2MVDEJQBO7 \
  | 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: b4d8b3b7029cb573df48d32a32260177c7a22f438f86babe767281660303386b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d786329515809d5e90670aba4e2c22a30038527fe37d25d13fb00b6d328fdf5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-12-16T14:22:06Z",
    "title_canon_sha256": "52a3cbfdf349c0aacb9fb8cc62c3b439db04cc1ca01616b16ebcd37d28aaf779"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.14433",
    "kind": "arxiv",
    "version": 2
  }
}