validator

var (
	// ErrEmptyTx is returned when the transaction is nil.
	ErrEmptyTx = errors.New("tx is empty")

	// ErrInvalidTxValue is returned when the transaction value is 0.
	ErrInvalidTxValue = errors.New("invalid tx value")

	// ErrInvalidTxSender is returned when the transaction sender is invalid.
	ErrInvalidTxSender = errors.New("invalid tx sender")

	// ErrInvalidTxRecipient is returned when the transaction recipient is invalid.
	ErrInvalidTxRecipient = errors.New("invalid tx recipient")

	// ErrMissingTxSignature is returned when the transaction signature is missing.
	ErrMissingTxSignature = errors.New("missing tx signature")

	// ErrInvalidTxSignature is returned when the transaction signature is invalid.
	ErrInvalidTxSignature = errors.New("invalid tx signature")

	// ErrTxSignatureNotHandled is returned when the transaction signature scheme isn't implemented.
	ErrTxSignatureNotHandled = errors.New("tx signature scheme not supported yet")

	// ErrTooManyTxs is returned when the sender tries to put too many transactions in a block.
	ErrTooManyTxs = errors.New("too many txs in proposed block")

	// ErrInvalidMerkleRoot is returned when the merkle root doesn't represent the block transactions.
	ErrInvalidMerkleRoot = errors.New("invalid merkle root")

	// ErrMultipleMinerRewards is returned when a block contains multiple miner rewards.
	ErrMultipleMinerRewards = errors.New("only one miner reward transaction is allowed per block")

	// ErrInvalidMinerReward is returned when the miner reward is invalid.
	ErrInvalidMinerReward = errors.New("miner reward is invalid")

	// ErrBlockHeightZero is returned we receive a block with height 0.
	ErrBlockHeightZero = errors.New("block should have height higher than 0")
)