A fair and provably secure random source on blockchain is the prerequisite for building trust-worthy decentralized applications. A good source of on-chain randomness needs to be unpredictable, unbiasable, verifiable and immediately available. It’s unpredictable when no one can predict the output before it’s generated; unbiasable when no one can influence…

In the age of digital business and fast-paced economy, online applications need to provide users with the best experience to retain them. One important aspect is how fast the apps respond to users’ actions. A slow website will test users’ short patience and eventually lose them. …

On November 18th around 7:30AM PST, some of our community members reported that their ONE tokens were transferred out of their OneWallet without their approval. After getting the notice, our team immediately started looking into the issue and we found that all the stolen tokens are transferred into the address…

Since the launch of open staking in May this year, we’ve seen tremendous growth of interest for staking on Harmony network. Nearly 4 billion ONE tokens are being staked across a total of 86 unique validators and the numbers are still growing. As the first Proof-of-Stake protocol with sharding, we…

(2 second block finality is achieved now, please refer to this article) A high performance and scalable blockchain is a key foundation for a decentralized economy. Adoption of decentralized applications is only possible when the infrastructure can handle a massive number of transactions. …

Harmony aims to build an open network operated and governed by hundreds of validators. On May 16th, 2020, we launched the first sharded proof-of-stake public blockchain with 320 external nodes which started our journey towards full decentralization. On June 23rd (epoch 208), we implemented the first slot increase from 320…

Harmony is one of the first production mainnets to feature a fully sharded PoS architecture. Across the 4 shards in Harmony mainnet, blocks are produced every 2 seconds and cross-shard transactions are finalized in 2 block times. Harmony’s Effective Proof-of-Stake (EPoS) is the first staking mechanism in a sharded blockchain…

As we prepare to launch the native ONE token through the token swap process, the security of token transfers and smart contract functionalities of the Harmony blockchain is the most critical launch criteria. When token swap is enabled, users will be able to convert their BEP2/ERC20 ONE tokens into native…

(Note this model has been updated. Details of the new model is in https://medium.com/harmony-one/harmonys-new-tokenomics-bcdac0db60d7) Token economy of public blockchains is as important as the blockchain protocol itself. A good token economic model should support the security and longterm sustainability of the network. …