NewBlockchain creates a new blockchain object.

NewTestBlockchain creates a new dummy blockchain for testing.

NewTestBlockchainWithBlocks creates a dummy blockchain with headers, bodies and receipts.

NewTestBodyChain creates a test blockchain with headers, body and receipts.

NewTestHeaderChain creates a chain of valid headers.

NewTestHeaderChainWithSeed creates a new chain with a seed factor.

NewTestHeaderFromChain creates n new headers from an already existing chain.

NewTestHeaderFromChainWithSeed creates n new headers from an already existing chain.

Blockchain is a blockchain reference.