what's StrategyStarknetBitcoinEthereumCardanoBitcoin CashBinanceSolana?

Strategy, formerly known as MicroStrategy, is a publicly traded business intelligence and analytics software company that has positioned itself as the world's largest corporate Bitcoin holder. The company develops enterprise software like Strategy ONE and Strategy Mosaic for data analytics, AI, and BI tools. It pioneered the Bitcoin treasury strategy by aggressively acquiring BTC using equity and debt financings, treating Bitcoin as its primary reserve asset to hedge against inflation and fiat devaluation.Starknet is a permissionless decentralized Layer 2 (L2) validity rollup (zk-rollup) scaling Ethereum using STARK zero-knowledge proofs. It enables high-throughput smart contract execution with low fees while inheriting Ethereum's security. Developers use the Cairo programming language to write provable programs, supporting general-purpose DeFi, NFTs, and apps. Starknet also focuses on privacy features and Bitcoin integration, such as BTC wrappers like strkBTC for shielded transactions.Bitcoin is the first and largest cryptocurrency, operating as a decentralized peer-to-peer electronic cash system secured by proof-of-work consensus. Its blockchain uses SHA-256 mining to validate transactions and create new blocks every ~10 minutes. Bitcoin enables trustless value transfer globally, with a fixed supply cap of 21 million coins, serving as digital gold for store-of-value.Ethereum is a decentralized global platform for smart contracts and decentralized applications (dApps). It uses proof-of-stake consensus post-Merge, with EVM-compatible execution. Ethereum supports ERC-20/721/1155 token standards, enabling DeFi, NFTs, DAOs, and Layer 2 scaling solutions.Cardano is a proof-of-stake blockchain platform designed with formal methods and peer-reviewed research for security and scalability. It uses Ouroboros consensus and supports smart contracts via Plutus (Haskell-based). Cardano emphasizes interoperability, sustainability, and adoption in developing regions through layered architecture (settlement + computation).Bitcoin Cash is a peer-to-peer electronic cash network forked from Bitcoin in 2017 to increase block size for better on-chain transaction throughput. It retains proof-of-work but with 32MB blocks (vs BTC 1MB), enabling low-fee payments. BCH aims for everyday transactions as digital cash.Binance is the world's largest cryptocurrency exchange by trading volume, offering spot, futures, margin, and options trading. It operates Binance Chain (BSC) for high-speed DeFi and its native BNB token for fees/gas. Binance also provides wallet, NFT marketplace, and launchpad services.Solana is a high-performance Layer 1 blockchain using proof-of-history (PoH) combined with proof-of-stake for parallel transaction processing. It achieves thousands of TPS with low fees via Gulf Stream forwarding and Turbine block propagation. Solana supports smart contracts in Rust/C via Sealevel runtime.