select
date_trunc('hour', block_timestamp) as hour,
count(distinct tx_hash) as sales
from ethereum.core.ez_nft_sales
where nft_address = '0x5af0d9827e0c53e4799bb226655a1de152a425a5'
and block_timestamp::date = current_date
and event_type = 'sale'
group by 1