/**
* @param BlockInterface $block
* @return $this
*/
public function check(BlockInterface $block)
{
$header = $block->getHeader();
if ($block->getMerkleRoot() !== $header->getMerkleRoot()) {
throw new \RuntimeException('Blocks::check(): failed to verify merkle root');
}
$transactions = $block->getTransactions();
$txCount = count($transactions);
if ($txCount == 0 || $block->getBuffer()->getSize() > $this->params->maxBlockSizeBytes()) {
throw new \RuntimeException('Blocks::check(): Zero transactions, or block exceeds max size');
}
// The first transaction is coinbase, and only the first transaction is coinbase.
if (!$transactions[0]->isCoinbase()) {
throw new \RuntimeException('Blocks::check(): First transaction was not coinbase');
}
for ($i = 1; $i < $txCount; $i++) {
if ($transactions->offsetGet($i)->isCoinbase()) {
throw new \RuntimeException('Blocks::check(): more than one coinbase');
}
}
$nSigOps = 0;
foreach ($transactions as $transaction) {
if (!$this->checkTransaction($transaction)) {
throw new \RuntimeException('Blocks::check(): failed checkTransaction');
}
$nSigOps += $this->getLegacySigOps($transaction);
}
if ($this->math->cmp($nSigOps, $this->params->getMaxBlockSigOps()) > 0) {
throw new \RuntimeException('Blocks::check(): out-of-bounds sigop count');
}
return $this;
}
