USDT/USDC Blacklist Dashboard

This monorepo contains:

• indexer/ — Envio HyperIndex project indexing USDT (Tether) and USDC (FiatTokenProxy) blacklist events, with Effect API + viem to fetch latest balances.
• ui/ — Next.js app that displays totals and top blacklisted addresses with a terminal-like UI.

Live repo

• GitHub: https://github.com/enviodev/usdt-usdc-blacklist-dashboard

Prerequisites

• Node.js v20
• pnpm
• Docker Desktop (for running HyperIndex locally)

Indexer quick start

1. Install deps

cd indexer
pnpm install

2. Generate types (after any schema/config change)

pnpm codegen

3. Type check (after any TS change)

pnpm tsc --noEmit

4. Run the indexer (local Hasura UI at http://localhost:8080)

TUI_OFF=true pnpm dev

Environment variables:

• ENVIO_RPC_URL — HTTPS mainnet RPC for viem (used by Effect API)

Documentation: see HyperIndex Complete Documentation: https://docs.envio.dev/docs/HyperIndex-LLM/hyperindex-complete

UI quick start

cd ui
pnpm install
pnpm dev

Environment variables:

• HASURA_GRAPHQL_ENDPOINT (optional; defaults to http://localhost:8080/v1/graphql)

Notes

• Balances are fetched at latest chain state. Blacklisted addresses cannot receive new tokens post-blacklisting; balances may decrease due to administrative actions (e.g., USDT DestroyedBlackFunds).