Yes, although there exist no libraries which let one easily implement such services. Simple on-chain transactions also require a transaction fee every time a mi

Yes, although there exist no libraries which let one easily implement such services. Simple on-chain transactions also require a transaction fee every time a micropayment is made, and due to this and the fact that blockchains still not scale to more than a few tx/s, the usage of payment channels is required. Here's a project of mine from a while ago: https://github.com/void4/paymentchannel https://github.com/void4/paymentchannel