select count(distinct tx_hash) as number_of_minters
from ethereum.core.ez_nft_mints
where block_timestamp between '2022-06-07 16:00:00.000' and '2022-06-07 17:00:00.000' and nft_address = '0x903e2f5d42ee23156d548dd46bb84b7873789e44' and
nft_from_address = '0x0000000000000000000000000000000000000000' and event_type = 'nft_mint'