It probably won't be a problem. Don't be an evangelist, and be even-keeled about how you talk about your projects. Discuss what made them interesting and the technical challenges you had with them. There's not a lot of hate for Bitcoin the technology, just the die-hard advocates that it attracts (i.e. the kind that throws penny shavings at people via changetip and talks about how the blockchain will bring about a utopian anarcho-capitalist society, end-the-fed-ron-paul-2016)

As long as you keep it technical and keep the non-technical stuff to yourself, it will be beneficial (and you should really do that for any topic in a technical interview). As an ancedote, I certainly wouldn't have any problems hiring someone with Bitcoin work, and my post history shows that I'm pretty skeptical of Bitcoin.