(begin 
    (try! (contract-call? .byzantion-market-v7 add-collection "SP28852C66BZ215P19HZ49TVJW7XCKFA2QP5RTB9R.artificial-satoshi::artificial-satoshi" "artificial-satoshi" 'SP28852C66BZ215P19HZ49TVJW7XCKFA2QP5RTB9R.artificial-satoshi u250 u500 'SP28852C66BZ215P19HZ49TVJW7XCKFA2QP5RTB9R))

    (ok true)
)