14 second low-variance block times is one that makes an impression from a user perspective. >In blockchain-based systems the costs are related to market dynami

14 second low-variance block times is one that makes an impression from a user perspective. >In blockchain-based systems the costs are related to market dynamics. Eg. miners can decide what they put to blocks and at what price. Or is ethereum somehow fundamentally different in this aspect? Both Bitcoin and Ethereum are fundamentally different from current payment systems, and as Ethereum goes to PoS, it will likely be quite different than Bitcoin's PoW. Both probably represent an improvement on current transaction methods, i.e. credit card with 1-2%, plus $0.2 to $0.3 flat processing fees. >Payment channels are perfectly supported by Bitcoin, what do you mean by "native"? I mean that off-chain channels can be integrated without changes to the current Ethereum code. http://www.arcturnus.com/ethereum-lightning-network-and-beyond/ http://www.arcturnus.com/ethereum-lightning-network-and-beyo... >Why is ethereums account-based architecture better than Bitcoin's UTXO architecture? Isn't really obvious to me. For bitcoin one txn requires n signatures for n unspent outputs. For Ethereum one txn requires just one signature. This has consequences for efficiency of micropayments and payment channels. https://blog.ethereum.org/2014/09/17/scalability-part-1-building-top/ https://blog.ethereum.org/2014/09/17/scalability-part-1-buil...