Ether FAQ

• ETH - Ethereum Mainnet - ETH1 - PoW
• ETH2 - BeaconChain - PoS
  • 2020-12-01 - 负责非交易业务，交易业务还是保留在 主网

Tornado.cash

• 混币器
• https://paper.seebug.org/1497/
• https://mirror.xyz/0xd05cFA28Eaf8B4eaFD8Cd86d33c6CeD1a1875417/YLDoqqD756FXh8Ps40c6uCOwpZZBL40V-QRP8qzn_SI

cannot estimate gas; transaction may fail or may require manual gas limit

• 可能是交易注定会失败 - 例如 assert 失败
• https://docs.ethers.org/v5/troubleshooting/errors/#help-UNPREDICTABLE_GAS_LIMIT