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ROFL (Runtime OFf-chain Logic) App

ROFL is a decentralized messaging application that manages group memberships based on token holdings. It serves as an off-chain oracle that verifies token balances and automatically manages group memberships.

How It Works

  1. Users can create groups with specific token requirements (token address and minimum balance)
  2. Users request to join groups, creating pending memberships
  3. The off-chain app periodically:
    • Fetches all pending memberships
    • Verifies token balances against group criteria
    • Automatically adds users to groups when they meet the requirements

Supported Networks

Currently, the app supports token verification on:

  • Ethereum Mainnet (Chain ID: 1)

Prerequisites

Install the ROFL pre-requisites

Build

Build the off-chain app binary:

oasis rofl build sgx --mode unsafe

Run

Start the localnet node using Docker:

docker run -it \
  -p8545:8545 \
  -p8546:8546 \
  -p8547:8547 \
  -p80:80 \
  -p8544:8544 \
  -v ./:/rofls \
  ghcr.io/oasisprotocol/sapphire-localnet

Logs

Read the logs from the running node:

docker ps | awk '{print $NF}' | xargs -I {} docker exec {} cat /serverdir/node/net-runner/network/compute-0/node.log