Solana vs Stacks

Solana combines Proof‑of‑History, Turbine block propagation and Gulf Stream forwarding to achieve throughput exceeding 50 000 TPS with 400 ms block times. The 2024 Firedancer client written in C++ reduced validator CPU requirements and added parallel pipeline execution. Solana Pay and the Saga phone SDK illustrate the project’s push toward consumer‑grade web3 applications.

Stacks is a Bitcoin Layer‑2 secured by Proof‑of‑Transfer where miners commit BTC to mint STX and anchor blocks to Bitcoin every 10–15 minutes. Clarity smart contracts enable DeFi with Bitcoin finality, and the sBTC proposal aims to bring a two‑way peg for native BTC on chain. The Nakamoto upgrade scheduled for 2025 will reduce block times to five seconds and add probabilistic Bitcoin finality.