Hedera (HBAR) vs Solana (SOL)

Hedera Hashgraph is a layer 1 blockchain platform that aims to be a more efficient, secure, and reliable distributed ledger than Bitcoin. The protocol is based on Proof of Stake (PoS) and is powered by a unique technology called Hashgraph, which incorporates concepts from directed acyclic graph theory for node management and a mechanism called "gossip protocol" for transaction validation.

Solana is a distributed and programmable layer 1 blockchain, part of the trend of "Ethereum Killers," which are competitors of Ethereum looking to replace it. Solana's unique design (notably through the Proof of History consensus) allows it to be optimized for scalability, with an exceptional (and theoretical) execution capacity of 60,000 transactions per second and extremely low fees. SOL is the native cryptocurrency of the Solana network, used to pay transaction fees, reward validators, and contribute to the governance of the project.