ARTIST = 0x8802b7f0bfa5e9f5825f2fc708e1ad00d2c2b5d6

// Make sure we have enough gas to run the contact
//if tx.value < tx.basefee * 200:
    // If not, stop
//    stop
    
// If the message is from the artist
if msg.datasize == 1 and msg.sender == ARTIST:
    // Add the work to the catalog
    contract.storage[msg.data[0]] = 1
    return(1)
// check inclusion
elif msg.datasize == 1:
    // Check whether the artwork is in the catalog
    return(contract.storage[msg.data[0]])
// Otherwise
else:
    return(0)