A device that is capable of sending/receiving telephony-based messages may communicate with a blockchain network without having a direct connection (e.g., internet connection) to the blockchain network. A message may be communicated via a telephony network to a telephony carrier system. The telephony carrier system may translate the telephony-based message into a blockchain-based communication and provide the blockchain-based communication to the blockchain network. In addition, an entity on the blockchain network may communicate with a device that does not have an internet connection to the blockchain network. The entity may initiate a blockchain-based communication that is received by an on-chain interface of a telephony network carrier. In response, the telephony network carrier may generate a telephony-based message and communicate the telephony-based message to the user device.