Harmony constructs an open commercial center at Google-scale for the decentralized economy. This venture aims to give an agreement convention over the open Internet at 10 million exchanges for every second with 100-millisecond idleness and at most 0.1% expense.
Issues and Solutions
Since the production of the Bitcoin whitepaper in 2008, the idea of blockchain has spread over the world. While decentralized cash and applications are winding up well-pitched thoughts, structure impediments have tested the center goal of Bitcoin. The first Bitcoin blockchain was planned as a distributed installment framework that enables individuals to move an incentive without go-betweens like banks or installment processors. In any case, as Bitcoin picked up ubiquity, its presentation bottleneck wound up obvious because of its constrained throughput of ~7 exchanges every second (TPS), and its expense as an installment framework turned out to be restrictively costly.
In 2014, Buterin et. al. proposed another blockchain foundation called Ethereum, which empowered engineers to make different sorts of blockchain applications utilizing "keen contracts." However, Ethereum didn't tackle the versatility issue and, with its ~15 TPS, neglected to help high-throughput applications, for example, gaming or decentralized trades. Given Ethereum and Bitcoin's presentation confinements, numerous blockchain ventures proposed different arrangements that endeavor to build exchange throughput. Different blockchains proposed to supplant Proof-of-Work (PoW) agreement with Proof-of-Stake (PoS) accord. Different blockchains like EOS use Delegated Proof of Stake (DPoS), where square proposers are chosen by democratic instead of by an on-chain algorithmic procedure. Activities like IOTA supplanted the chain-of-squares information structure with a DAG (Directed Acyclic Graph) information structure, which breaks the restriction of consecutive handling of exchanges.
Be that as it may, these proposed arrangements can't make huge execution gains without relinquishing other basic viewpoints, for example, security and decentralization. The versatility arrangement that the two jelly security and decentralization is sharding, which makes various gatherings (for example shards) of validators and gives them a chance to process exchanges simultaneously. Therefore, the absolute exchange throughput increments straightly as the quantity of shards develops. Zilliqa was the main open blockchain that proposed to address the adaptability issue with sharding. In any case, Zilliqa's sharding approach misses the mark in two different ways. To begin with, it doesn't partition the capacity of blockchain information (state sharding). This keeps machines with restricted assets from taking part in the system, in this way diminishing decentralization. Second, Zilliqa's sharding procedure is defenseless to a solitary shard takeover assault because of its dependence on PoW as its haphazardness age instrument.
We present Harmony, the cutting edge sharding-based blockchain that is completely adaptable, provably secure, and vitality productive. Concordance tends to the issues of existing blockchains by joining the best research results and building practice in an ideally tuned framework.
Completely Scalable: Harmony shards not just the system correspondence and exchange approval like Zilliqa, yet additionally shards the blockchain state. This makes Harmony a completely versatile blockchain.
Secure Sharding: Harmony's sharding procedure is provably secure gratitude to the appropriated irregularity age (DRG) process which is erratic, unbiaseable, unquestionable and versatile. Agreement additionally reshards the system in a non-interruptive way to forestall against gradually versatile byzantine foes.
Proficient and Fast Consensus: Unlike other sharding-based blockchains which expect PoW to choose validators, Harmony depends on PoS and in this manner vitality effective. Accord is come to with a straightly adaptable BFT calculation that is multiple times quicker than PBFT.
Versatile Thresholded PoS: The limit of stakes required for a hub to join the system is balanced dependent on the volume of complete staking such that noxious stakers can't pack their capacity in a solitary shard. In addition, the limit is low enough so that little stakers can even now take an interest in the system and acquire rewards.
Versatile Networking Infrastructure: With RaptorQ wellspring code, Harmony can proliferate squares rapidly inside shards or crosswise over system by utilizing the Adaptive Information Dispersal Algorithm. Concordance likewise embraces Kademlia steering  to accomplish cross-shard exchanges that scale logarithmically with the quantity of shards.
Steady Cross-Shard Transactions: Harmony supports cross-shard exchanges with shards legitimately speaking with one another. A nuclear locking system is utilized to guarantee the consistency of cross-shard exchanges.
By advancing on both the convention and system layers, * Harmony furnishes the world with an adaptable and secure blockchain framework that can bolster the developing decentralized economy. Congruity will empower applications which were not beforehand doable on blockchain, counting high-volume decentralized trades, intuitive reasonable games, Visa-scale installment frameworks, and Internet-of-Things exchanges. Congruity endeavors to scale trust for billions of individuals and make a profoundly reasonable economy.
Token Utility and Use Cases
Congruity's open, decentralized system is empowered using the local convention token - Harmony ONE. The token boosts and rewards an assortment of members including designers, validators/stakers, speculators, and network individuals who create, secure and administer the system. So as to utilize the system, clients pay a little exchange charge designated in the local Harmony token.
Amicability's adaptable, high-throughput convention is controlled by a local token which is utilized for different types of installment and investment in the convention (staking, exchange charges, casting a ballot and administration).
Concordance utilizes blockchain to adjust impetuses of various partners, designers and organizations while enabling them to fabricate open commercial centers of fungible and non-fungible tokens and resources. Besides, the forthcoming use of zero-learning verifications will enable Harmony to turn into an information sharing stage that can beat the clashing issue tormenting numerous data and information advertises: that individual market members' have common doubt to share information however powerful urge to get information themselves.
The Harmony token will work in the accompanying parts of the convention:
The token is utilized for staking, which is important to take an interest in the POS agreement and acquire square rewards and exchange charges.
The token is utilized to pay for exchange charges, gas and capacity expenses.
The token is utilized in deciding in favor of on-chain administration of the convention.