Demian Brener, the cofounder and CEO of Zeppelin discusses a dilemma he's seeing investors be concerned about: whether blockchains should be immutable forever or whether it should be possible to upgrade smart contracts over time. He explains why he doesn't see it as a dilemma, how it could be possible to have an upgradeable, immutable blockchain. We also cover another trend he's seeing: would-be ICO issuers instead turning to airdrops as a way to avoid some regulatory issues. Now that Tezos Betanet has launched (plus EOS and Dfinity are in the race), we talk about what factors will determine which smart contract platforms come out on top, plus Brener describes how the libraries he's building at Zeppelin OS could factor in. Thank you to our sponsors! Clarity PR: http://clarity.pr Onramp: http://www.thinkonramp.com Links for the show: Zeppelin OS: https://zeppelinos.org Tezos Betanet: https://tezos.com/betanet/ Dfinity airdrop: https://medium.com/dfinity/liftoff-the-dfinity-community-airdrop-is-here-5a11b94a2d03