Is it working on a blockchain?
Relatively. Blockstack keeps some records of Gaia storage on a blockchain.

@runkod I would say that there is no record of gaia storage on a blockchain. Currently there is only the blockstack id / owner address association stored on chain. I don't even see a lookup of a blockstack id in the code. Would runkod work also for anonymous users (i.e. without a public blockstack id, just an address)?