This comprehensive guide compares three Bitcoin address formats: Legacy, SegWit, and Native SegWit, explaining their technological evolution and practical differences. Bitcoin users face choices between address types that impact transaction efficiency, costs, and wallet compatibility. Legacy addresses (starting with 1) represent the original format but offer lower efficiency, while SegWit addresses (starting with 3) provide improved scalability through witness data separation. Native SegWit, or Bech32 addresses (starting with bc1), deliver the most cost-effective transactions and enhanced security features. The article clarifies which address format suits different user needs, emphasizing that Native SegWit offers superior transaction speed, lowest fees, and better error detection. Supported by major wallets and increasingly adopted by leading exchanges like Gate, this guide helps users optimize their Bitcoin transaction experience and make informed decisions about address migration.