-CheckLockTimeVerify (CLTV) -CheckSequenceVerify (CSV) -Replace-By-Fee (RBF) -> See Peter Todd and https://medium.com/@bramcohen/how-wallets-can-handle-transa

-CheckLockTimeVerify (CLTV) -CheckSequenceVerify (CSV) -Replace-By-Fee (RBF) -> See Peter Todd and https://medium.com/@bramcohen/how-wallets-can-handle-transaction-fees-ff5d020d14fb#.wkd3ig8no https://medium.com/@bramcohen/how-wallets-can-handle-transac... -compact blocks -segwit (already been released, waiting to be activated by miners) -good progress by the 5 implementations (alpha-versions) of the Lightning-protocol (hughe improvement on scalability and even privacy by using TOR). See Rusty Russell: https://medium.com/@rusty_lightning/the-bitcoin-lightning-spec-part-5-8-onion-routing-protocol-86c91e455909#.mmgh2rra9 https://medium.com/@rusty_lightning/the-bitcoin-lightning-sp...