/**
* Checks the block data to ensure it follows the rules laid out in the network parameters.
* Specifically, throws an exception if the proof of work is invalid, or if the timestamp is too
* far from what it should be. This is <b>not</b> everything that is required for a block to be
* valid, only what is checkable independent of the chain and without a transaction index.
*
* @throws VerificationException
*/
public void verifyHeader() throws VerificationException {
// Prove that this block is OK. It might seem that we can just ignore most of these checks given
// that the
// network is also verifying the blocks, but we cannot as it'd open us to a variety of obscure
// attacks.
//
// Firstly we need to ensure this block does in fact represent real work done. If the difficulty
// is high
// enough, it's probably been done by the network.
maybeParseHeader();
checkProofOfWork(true);
checkTimestamp();
}
