Function CheckBlockHeader

bitcoin/core/__init__.py:839–857

Context independent CBlockHeader checks. fCheckPoW - Check proof-of-work. cur_time - Current time. Defaults to time.time() Raises CBlockHeaderError if block header is invalid.

(block_header, fCheckPoW = True, cur_time=None)

def CheckBlockHeader(block_header, fCheckPoW = True, cur_time=None):
    """Context independent CBlockHeader checks.

    fCheckPoW - Check proof-of-work.

    cur_time  - Current time. Defaults to time.time()

    Raises CBlockHeaderError if block header is invalid.
    """
    if cur_time is None:
        cur_time = time.time()

    # Check proof-of-work matches claimed amount
    if fCheckPoW:
        CheckProofOfWork(block_header.GetHash(), block_header.nBits)

    # Check timestamp
    if block_header.nTime > cur_time + 2 * 60 * 60:
        raise CheckBlockHeaderError("CheckBlockHeader() : block timestamp too far in the future")


class CheckBlockError(CheckBlockHeaderError):