db

const (
	//! Unused.
	BLOCK_VALID_UNKNOWN = 0

	//! Parsed, version ok, hash satisfies claimed PoW, 1 <= vtx count <= max, timestamp not in future
	BLOCK_VALID_HEADER = 1

	//! All parent headers found, difficulty matches, timestamp >= median previous, checkpoint. Implies all parents
	//! are also at least TREE.
	BLOCK_VALID_TREE = 2

	/**
	 * Only first tx is coinbase, 2 <= coinbase input script length <= 100, transactions valid, no duplicate txids,
	 * sigops, size, merkle root. Implies all parents are at least TREE but not necessarily TRANSACTIONS. When all
	 * parent blocks also have TRANSACTIONS, CBlockIndex::nChainTx will be set.
	 */
	BLOCK_VALID_TRANSACTIONS = 3

	//! Outputs do not overspend inputs, no double spends, coinbase output ok, no immature coinbase spends, BIP30.
	//! Implies all parents are also at least CHAIN.
	BLOCK_VALID_CHAIN = 4

	//! Scripts & signatures ok. Implies all parents are also at least SCRIPTS.
	BLOCK_VALID_SCRIPTS = 5

	//! All validity bits.
	BLOCK_VALID_MASK = BLOCK_VALID_HEADER | BLOCK_VALID_TREE | BLOCK_VALID_TRANSACTIONS |
		BLOCK_VALID_CHAIN | BLOCK_VALID_SCRIPTS

	BLOCK_HAVE_DATA = 8  //!< full block available in blk*.dat
	BLOCK_HAVE_UNDO = 16 //!< undo data available in rev*.dat
	BLOCK_HAVE_MASK = BLOCK_HAVE_DATA | BLOCK_HAVE_UNDO

	BLOCK_FAILED_VALID = 32 //!< stage after last reached validness failed
	BLOCK_FAILED_CHILD = 64 //!< descends from failed block
	BLOCK_FAILED_MASK  = BLOCK_FAILED_VALID | BLOCK_FAILED_CHILD

	BLOCK_OPT_WITNESS = 128 //!< block data in blk*.data was received with a witness-enforcing client
)