The push for smartphone-enabled voting funded by venture capitalist Bradley Tusk is eying the nation's capital as its next proving ground.

Very little has happened with blockchain in state government.

Miami Mayor Francis Suarez said the city will partner with cryptocurrency exchanges to provide residents with digital wallets.

Miami's chief information officer said he signed up for cryptocurrency payments to avoid continuing "to live in the current paradigm.”

Philadelphia CIO Mark Wheeler said the city is calling for blockchain and cryptocurrency experts to share their ideas for local government applications of the technologies.

Blockchains founder and CEO Jeffrey Berns said he's pulling out of further talks, citing the absence of "a champion" for the project.

Technology officials say they're interested in distributed-ledger technology, but that they have a few questions before their cities start investing.

Tusk is partnering with some of his former critics to develop a new mobile-voting platform he hopes can be used eventually by "millions of voters."

San Jose will deploy 20 hotspots that also mine cryptocurrency throughout the city with the aim of subsidizing internet costs for 1,300 households.

CityCoins founder Patrick Stanley said he's planning to expand to new locations.