slashr

Live multi-chain validator penalty tracker. Every time a validator goes offline, gets slashed, or misbehaves — it shows up here.

slashr.dev

What is this

Blockchains are kept running by validators — machines that verify transactions and put up money as a guarantee they'll behave. When they don't, they get penalised. Sometimes a slap on the wrist. Sometimes they lose everything.

Slashr tracks these penalty events in real-time across:

• Solana — delinquency (missed votes)
• Ethereum — slashing, inactivity leaks
• Cosmos Hub — double-sign slashing, downtime jailing
• Sui — tallying penalties

The audience is delegators, researchers, and anyone watching validator behaviour.

Stack

React 19 + TypeScript + Vite. Deploys to Cloudflare Pages. No SSR — this is a static client-side SPA.

Dependencies are minimal by design: no state management library, no CSS-in-JS, no component library. Just React, React Router, and three fonts.

Getting started

npm install

Create a .env file:

VITE_API_URL=http://localhost:3000   # API base URL
VITE_USE_MOCK=true                   # use embedded mock data instead of real API

npm run dev      # dev server
npm run build    # production build (zero TS errors required)
npm run preview  # preview production build

Project structure

src/
  api/          client.ts (fetch wrapper), mock.ts (embedded mock data)
  components/   UI components (EventRow, NetworkStrip, TabBar, etc.)
  hooks/        data fetching hooks (useEvents, useLeaderboard, etc.)
  pages/        route-level pages (FeedPage, LeaderboardPage, etc.)
  lib/          constants, formatters, time utilities
  styles/       global.css (CSS variables, dark/light theme)
  types/        TypeScript types matching API response shapes

Pages

Route	What it shows
/	Live feed of validator penalty events
/validators	Paginated validator directory
/leaderboard	Worst-performing validators ranked by severity
/reports	Provider reliability reports
/check	Paste a wallet address to check your validators
/validator/:network/:address	Individual validator profile + event history

API

The frontend consumes the Slashr REST API. All responses use {"data": ...} envelope with optional cursor pagination. Set VITE_USE_MOCK=true to run without a backend.

Design

Dark theme by default, light theme available. Monospace-accented, feed-first. Not a dashboard.

• Headings: Space Grotesk 700
• Body: Inter 400/500/600
• Data/tags: JetBrains Mono 400/600

---

Built by NullRabbit