Package clique implements the proof-of-authority consensus engine.

Package ethash implements the ethash proof-of-work consensus engine.

Constants to match up protocol versions and messages istanbul/99 was added to accommodate new eth/64 handshake status data with fork id this is for backward compatibility which allows a mixed old/new istanbul node network istanbul/64 will continue using old status data as eth/63.

Constants to match up protocol versions and messages istanbul/99 was added to accommodate new eth/64 handshake status data with fork id this is for backward compatibility which allows a mixed old/new istanbul node network istanbul/64 will continue using old status data as eth/63.

ErrFutureBlock is returned when a block's timestamp is in the future according to the current node.

ErrInvalidNumber is returned if a block's number doesn't equal its parent's plus one.

ErrPrunedAncestor is returned when validating a block requires an ancestor that is known, but the state of which is not available.

ErrUnknownAncestor is returned when validating a block requires an ancestor that is unknown.

Default: Keep up-to-date with eth/protocol.go.

Protocol defines the protocol of the consensus.

Broadcaster defines the interface to enqueue blocks to fetcher and find peer.

ChainReader defines a small collection of methods needed to access the local blockchain during header and/or uncle verification.

Engine is an algorithm agnostic consensus engine.

Handler should be implemented is the consensus needs to handle and send peer's message.

Istanbul is a consensus engine to avoid byzantine failure.

Peer defines the interface to communicate with peer.

PoW is a consensus engine based on proof-of-work.