📚 Core Concepts
Welcome to the foundational layer of QIE — an EVM-compatible blockchain. This page explains the key ideas that power our network and help you build efficient, scalable, and secure dApps that benefit from both Ethereum and Cosmos ecosystems.
🧱 1. EVM Compatibility
QIE is fully compatible with the Ethereum Virtual Machine (EVM), meaning:
You can write smart contracts in Solidity or Vyper.
Ethereum tools like MetaMask, Hardhat, Truffle, and Remix work seamlessly.
You can deploy contracts, use Ethereum libraries, and migrate dApps with minimal changes.
✅ If it works on Ethereum, it works on QIE — with cross-chain capabilities.
⚡ 2. High Throughput via Cosmos Stack
QIE leverages the Cosmos SDK and Tendermint Core (CometBFT) consensus for high performance:
Fast block times (~2 seconds)
Finality on each block (no probabilistic finality)
Designed to support high-volume dApps like DeFi, games, and on-chain identity
Achieving thousands of TPS through modular design and parallel transaction execution.
💰 3. Low Transaction Fees
Thanks to our efficient architecture and Cosmos-based fee model:
Fees are predictable and much lower than Ethereum.
Ideal for microtransactions, NFTs, and other cost-sensitive operations.
Developers can subsidize gas for users or use fee abstraction models.
🔄 4. Tendermint-Based Consensus
QIE uses Tendermint Core (BFT-based consensus), offering:
Fast finality (no waiting for confirmations)
High throughput and network stability
Validator-based governance for upgrades and economic changes
Want to become a validator or delegator? Explore our Validator Setup Guide
🧩 5. Modular Architecture
QIE offers a highly modular design:
Add or modify modules without hard forks
Customize features like staking, governance, and fee handling
Future-proof architecture supporting upgrades and innovation
🔗 6. Interoperability via IBC & Bridges
QIE is interoperable by design, thanks to:
IBC (Inter-Blockchain Communication) for direct messaging between Cosmos chains
Bridges to Ethereum and other major ecosystems
Support for ERC-20, ERC-721, ERC-1155 standards
Build multi-chain dApps and access liquidity across chains.
🧠 7. Smart Contracts & Storage
On QIE, smart contracts:
Run on the EVM-compatible execution layer
Maintain state across blocks with native on-chain storage
Can access external data via oracles and cross-chain interfaces
Smart contracts deployed on Ethereum can be migrated with minimal changes.
📊 8. Native Coin
Coin Symbol: QIE
Utility: Paying gas fees, staking, validator rewards, governance
Can be transferred across Cosmos chains via IBC and bridged to EVM chains
Designed for real utility, governance, and ecosystem incentives.
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