Back in 2018, the LockTrip team published the "LockTripBlockchain Manifest," which became the foundational design document for HydraChain. The document addressed challenges encountered during the development of the LockTrip DaPP. To find the best solution, the team took an evolutionary approach, building Hydra on top of proven open-source technology, similar to successful blockchain projects like Bitcoin Cash, Litecoin, and Qtum. Hydra aims to implement critical economic features while utilizing reliable technology for data transmission. It is a permissionless, open-source, proof-of-stake blockchain based on QTUM, Bitcoin, Ethereum, and BlackCoin's PoV v3. Designed by Pavel Vasin, Hydra encourages stakers and market participants to contribute to its decentralized architecture. Hydra has fixed transaction fees in USD, calculated dynamically based on market prices. This provides businesses with predictability and reduces the risk of building on the blockchain. Additionally, Hydra has a gas royalty feature that shares 50% of transaction fees with smart contract creators, incentivizing developers to build on the chain. For more information, visit the Hydra website: https://hydrachain.org/