select count(*) FROM (

select

from_address,

TIMESTAMPDIFF(

SECONDS,

LAG(block_timestamp, 1) OVER (

PARTITION BY from_address

ORDER BY

block_timestamp

),

block_timestamp

) time_between_txs

from

arbitrum.core.fact_transactions

where

(

block_number >= 193371117

and block_number <= 193375117

)