Abstract: Methods, systems, and devices for cryptocurrency transactions are described. An index value associated with a transaction for goods or services may be included in a block chain entry of a cryptocurrency transaction. The index value may be embedded in a field of information already present in the block chain entry. Upon receiving a cryptocurrency payment a transaction component may be configured to use the index value to link the transaction for goods or services with the cryptocurrency payment.

Abstract: Techniques are described herein that allows servicers to provide services a way to easily exchange cryptocurrencies in exchange for goods or services. A transaction component may be configured to facilitate fiat currency transactions using one or more fiat currency exchanges and may be configured to facilitate cryptocurrency transactions using one or more cryptocurrency exchanges. The transaction component may be configured to exchange fiat currencies for cryptocurrencies, exchange cryptocurrencies for fiat currencies, and/or exchange a cryptocurrency for a different cryptocurrency.