IsBlockNonceErr returns true for invalid block nonce errors.

Creates and returns a `BlockCache` with `size`.

Utility functions for making chains on the fly Exposed for sake of testing from other packages (eg.

Create a new filter which uses a bloom filter on blocks to figure out whether a particular block is interesting or not.

See YP section 4.3.4.

must be bumped when consensus algorithm is changed, this forces the upgradedb command to be run (forces the blocks to be imported again using the new algorithm).

Set of manually tracked bad hashes (usually hard forks).

So we can deterministically seed different blockchains.

Transaction Pool Errors.

So we can deterministically seed different blockchains.

BlockCache implements a caching mechanism specifically for blocks and uses FILO to pop.

BlockNonceErr indicates that a block's nonce is invalid.

ChainSplit is posted when a new head is detected.

So we can generate blocks easily.

Filtering interface.

NewBlockEvent is posted when a block has been imported.

NewMinedBlockEvent is posted when a block has been imported.

Parent error.

Mining operation events.

* The State transitioning model * * A state transition is a change made when a transaction is applied to the current world state * The state transitioning model does all all the necessary work to work out a valid new state root.

TxPool contains all currently known transactions.

TxPostEvent is posted when a transaction has been processed.

TxPreEvent is posted when a transaction enters the transaction pool.

Block validation error.

TODO move this to types?.

Message represents a message sent to a contract.