Best Smart Contract Platforms for Harmony

Ethereum is the community-run technology powering the cryptocurrency, ether (ETH) and thousands of decentralized applications. Ethereum is a technology that's home to digital money, global payments, and applications. The community has built a booming digital economy, bold new ways for creators to earn online, and so much more. It's open to everyone, wherever you are in the world – all you need is the internet. Today, billions of people can’t open bank accounts, others have their payments blocked. Ethereum's decentralized finance (DeFi) system never sleeps or discriminates. With just an internet connection, you can send, receive, borrow, earn interest, and even stream funds anywhere in the world. Today, we gain access to 'free' internet services by giving up control of our personal data. Ethereum services are open by default – you just need a wallet. Stake your ETH to become an Ethereum validator.

BNB Smart Chain (BSC) is a blockchain platform developed by Binance, designed to enable decentralized applications (dApps) and smart contracts. It operates as a parallel chain to Binance Chain, combining high-speed transactions with the programmability of Ethereum-compatible smart contracts. BSC uses a Proof-of-Staked-Authority (PoSA) consensus mechanism, which enhances scalability and efficiency while reducing transaction costs. It is compatible with the Ethereum Virtual Machine (EVM), allowing developers to easily port dApps and projects from Ethereum. BSC has become a popular choice for decentralized finance (DeFi), gaming, and NFT ecosystems, offering users a fast, low-cost, and secure platform for blockchain-based innovations.

Create powerful decentralized applications with API3’s decentrally governed and quantifiably secure data feeds. API3 data feeds, dAPIs, aggregate data from first-party oracles, operated by some of the world’s premier API providers. Decentralized, trust-minimized and transparent governance. First-party oracles instead of third-party middlemen. Users insured against data feed malfunctions. Real-world data for any smart contract platform. API3 data feeds are governed by an open DAO of stakeholders, industry experts and project partners. This allows dAPIs to be operated with maximal transparency, minimal required trust in centralized operators, and no centralized attack surfaces. API token holders can take a direct part in governing the project by staking API3 tokens into the API3 insurance staking contract, which grants them shares in the API3 DAO.

Connect your smart contract to the outside world. Chainlink's decentralized oracle network provides reliable, tamper-proof inputs and outputs for complex smart contracts on any blockchain. Start building your universally connected smart contract. Use decentralization, trusted nodes, premium data, and cryptographic proofs to connect highly accurate and available data/APIs to any smart contract. Build on a flexible framework that can retrieve data from any API, connect with your existing systems, and integrate with any blockchain, now and in the future. Integrate battle-hardened and time-tested oracle solutions that secure billions of dollars in value for market-leading blockchain projects. Independently monitor and verify Chainlink’s open-source code, the performance of its oracle networks, and the quality of individual node operators.