NewBackend creates a new ethereum backend.

NewEthereumProtocol creates the ethereum protocol.

Completed if the item has been fully downloaded.

OnFly if the item is being requested.

Pending if the item has to be scheduled for downloading.

ETH63 is the Fast synchronization protocol.

AckMessage is the ack message.

Backend is the ethereum backend.

Ethereum is the protocol for etheruem.

NotifyMsg notifies that there is a new block.

Queue3 stores the data in epochs, one epoch at a time, only when one epoch is consumed we proceed to consume the next one.

Request is a request from the skeleton queue to retrieve information.

Slot is the slots in the epoch, groups of 190.

Status is the object for the status message.

Blockchain interface are the methods required by the handler.

RequestStatus is the status of the items in the slot (RENAME).