Pith Number

pith:FVVD5VHL

pith:2021:FVVD5VHLVH5NN2MES4BZQX4CXG

not attested not anchored not stored refs pending

36 Hz integral linewidth laser based on a photonic integrated 4.0-meter coil resonator

Andrei Isichenko, Daniel J. Blumenthal, Grant M. Brodnik, Jiawei Wang, Kaikai Liu, Nitesh Chauhan, Paul A. Morton, Ryan Behunin, Scott B. Papp

arxiv:2112.09246 v1 · 2021-12-16 · 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{FVVD5VHLVH5NN2MES4BZQX4CXG}

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	2026-07-05T04:55:28.857820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d6a3ed4eba9fad6e9849703985f82b9990d2088289618cf10d9d82509e03bb8

Aliases

arxiv: 2112.09246 · arxiv_version: 2112.09246v1 · doi: 10.48550/arxiv.2112.09246 · pith_short_12: FVVD5VHLVH5N · pith_short_16: FVVD5VHLVH5NN2ME · pith_short_8: FVVD5VHL

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/FVVD5VHLVH5NN2MES4BZQX4CXG \
  | 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: 2d6a3ed4eba9fad6e9849703985f82b9990d2088289618cf10d9d82509e03bb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6aca5d8c159677577a5053c7ea74ddab8a3d1ef26b48fe5d7c8517537cbe8d56",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-12-16T23:06:25Z",
    "title_canon_sha256": "65ac311d9b4bb5b452c3e8bdd392fe9f9a870f5306a95af86e44d67c021b84c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.09246",
    "kind": "arxiv",
    "version": 1
  }
}