6 mins
(25 blocks)
(25 blocks)
How to scale Ethereum applications in 2021? Harmony is a sharding protocol with a trustless Ethereum bridge.
Our developers use Ethereum tooling such as Solidity and Ether.js. Users use Metamask to store and they use our bridge to swap Harmony and Ethereum assets. We achieve 2-second finality for fast transactions and support 1000 delegating stakers for secure shards.
A cross-chain Uniswap fork is already live on our mainnet. Similar to layer 2 protocols, Harmony is now fully interoperable with the Ethereum ecosystem.
Harmony has transcended the blockchain trilemma by bringing the best research to production. Sharding is proven to scale blockchains without compromising security and decentralization.
We divide not only our network nodes but also the blockchain states into shards, scaling linearly in all three aspects of machines, transactions and storage.
To prevent single shard attacks, we must have a sufficiently large number of nodes per shard and cryptographic randomness to re-shard regularly. Each shard has 250 nodes for strong security guarantee against Byzantine behaviors. We use Verifiable Random Function (VDF) for unbiasable and unpredictable shard membership.
Harmony has innovated on the battle-tested Practical Byzantine Fault Tolerance (PBFT) for fast consensus of block transactions. Our Fast BFT (FBFT) leads to low transaction fees and 1-block-time finality in Harmony Mainnet.
We use Boneh–Lynn–Shacham (BLS) constant-sized signatures to commit blocks in a single round of consensus messages. We achieve 2-second block time with view changes in production against adversarial or unavailable leaders.
Harmony Mainnet was launched in June 2019. Our network has produced 30M+ blocks with 450k+ transactions in publicly traded, native ONE tokens.
Harmony has designed a novel Proof-of-Stake (PoS) mechanism for network security and economics. Our Effective Proof-of-Stake (EPoS) reduces centralization and distributes rewards fairly to thousands of validators.
Our staking mechanism supports delegation and reward compounding. To support 100% uptime but fully open participation, EPoS slashes validators who double-sign and it penalizes elected but unavailable nodes.
Harmony Economics Model caps the annual issuance at 441 million tokens (about 3% rate in long term). Our model gives validators a simple and predictable return. All transaction fees are burnt to offset the insurance, naturally leading to zero inflation when our network usage becomes high.
Year in Review: Harmony Milestones in 2020
We look back on 2020 milestones on our network, engagement with broader blockchain ecosystems, and support for developers & partners.
Horizon: the Harmony - Ethereum Bridge is live on Mainnet
Horizon is a digital asset bridge allowing users to move assets from Ethereum to Harmony. It is now live on mainnet and is the first piece of our cross-chain ecosystem.
Harmony launches on Binance US feat. Simon Wan
Harmony ONE launches on Binance.US to users based in the United States. In this film, we celebrated great American pioneers and the progress of technology.
How To Create a Simple dApp on Harmony Protocol
We share a tutorial on how to create a dApp on Harmony. Developers can watch this and get all the essentials to start building on Harmony today.
DeFi 101: Interoperability, Bitcoin, Ethereum, Top Tools & Teams
DeFi can appear a little intimidating to get started with. We've put together a series of films that will gently place you into the world of DeFi. It is up to you to take the leap of faith.
Horizon: Ethereum to Harmony Protocol and SDK Workshop
We explain the Harmony to Ethereum Bridge, our SDK, and how to use the bridge. We also discuss additional resources helpful for developers in this video series.
Harmony’s 2021 on Cross-Chain Finance
In 2021 Harmony strives to be a top blockchain for cross-chain finance.
Our main themes are adoption through developers and partners, interoperability bridging with Bitcoin and Ethereum to enable new finance applications, and decentralization for external validator community to guarantee our long-term governance.
Harmony Roadmap: Cross-Chain & Cross-Exchange Pools
We are building trustless bridges to Bitcoin, Ethereum and Binance chains for broader access of users and assets to decentralized finance.
Our product is a cross-chain exchange. Later we will be putting order books on chain for cross-exchange arbitrage and fiat cash-flow management.
Harmony $7M Grant: Cross-Border Finance & Zero-Knowledge Proofs
Our grants are to drive our platform’s mainnet utility, decentralized community, and cryptographic innovations — aligned with our 2020 roadmap on cross-border finance and auditable privacy.
We allocate 154.2M tokens per month for protocol and ecosystem development.
Harmony aims to build an open network of nodes operated and governed by a large community. This node community is called Pangaea.
Are we decentralized yet? There’s no consensus without participation. There are now 1,000 Harmony nodes – so far 640 of them run by the community – in line with thousands of Bitcoin and Ethereum nodes. Pangaea consists of volunteers and validators from more than 100 countries and most of them have never run a node before.
Cross-Chain Uniswap & Whitepaper, 2-Second Finality
Coinbase Rosetta Integration, Gitcoin Hackathon
2021 Q1
Ethereum Endpoints: Web3.js, MetaMask, Wallets
Trustless Bridge with Light Client, Fast State Sync
2021 Q2
Decentralized Voting Power, VDF Resharding
Bitcoin Bridge, Native BTC-ERC20 Asset Swaps
Cross-Shard Contracts, Cross-Chain Infrastructure
On-Chain Governance, On-Chain Order Books
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