/**
* @param NodeInterface $node
* @param array $params
* @return array
*/
public function execute(NodeInterface $node, array $params)
{
if (strlen($params[self::PARAM_TXID]) !== 64) {
throw new \RuntimeException('Invalid txid field');
}
$txid = Buffer::hex($params[self::PARAM_TXID], 32);
$tx = $node->chain()->fetchTransaction($node->transactions(), $txid);
return ['tx' => $this->convertTransactionToArray($tx)];
}
