Question

WHAT IS A DOUBLE SPEND PROBLEM OF DITIAL CASH TRANSACTION? HOW THE DOUBLE SPEND PROBLEM OF DIGITAL CASH IS RESOLVED IN BLOCKCHAIN TECHNOLOGY?

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Engineering
Computer Science

Related Computer Science Q&A

Find answers to questions asked by students like you.

Q: what is mantissa and exponent values of 6.75

A: Convert decimal number (6.25)10 to binary:First, convert integer value (6)10 to binary:To obtain bin...

Q: Python 3.7.4: Write a loop that reads positive integers from standard input and that terminates when...

A: Program Instructions:The sum is used to calculate the sum of the list.The check variable is used to ...

Q: First, launch NetBeans and close any previous projects that may be open (at the top menu go to File ...

A: Program InstructionsFirst, click on the file and create a new project called “PatternMaker”.Then, cr...

Q: What is the RAND Report? Why was it developed? What was published in the RAND Report R-609?Why was i...

A: RAND Report:RAND reports consist of findings from the profound research and objective analysis which...

Q: consider the UDP 12 03 00 0F 00 1E A3 10 what is the total length of UDP

A: Total length of UDP:The given UDP (User Datagram Protocol) header is 12 03 00 0F 00 1E A3 10 

Q: Write a simplified expression for the Boolean function defined by the following Kmap.

A: Identify only 1’s in the kmap group.Find the largest group of 1’s.In three varible a group can have ...

Q: Preffered language is java. Will be compiled with intellij. Need a solution for each part 1-5. Is it...

A: This program asks the user a question and tells whether the answer is correct or not. Keeps asking t...

Q: I dont understand whats going on Its hard for me to read whats happening and what the output will be...

A: Click to see the answer

Q: How do I code this on python heres the problem  Use the Design Recipe to define a function count_val...

A: Programming instructions: Define the function count_value which takes the list and a value as an arg...

Q: PLEASE EXPLAIN ALL STEPSIn the following code, determine the value of the symbole this. Predict and ...

A: Explanation of given code:“this” is a variable.DECO this, d; The instruction DECO means Decimal outp...

Q: Complete the program used on the instructions given in the comments:   C++ lang #include <string&...

A: Click to see the answer

Q: Make this code more efficient   numb = int(input("What is your favourite number? ")) name = str(inpu...

A: To make this code more efficient do not use NOT and AND operation instead of this use nested if to m...

Q: Write down a Unix command that will change security permissions on a file named file1.txt so that th...

A: Ownership of filesUser (u): A person who creates the file. User is also known as owner of the file.G...

Q: 4. Given the for loop, rewrite the code so that it executes exactly the same but uses a while loop f...

A: For-loop syntax:             for(initialization ; condition ; updation)                             ...

Q: c++ program to read file and output grades - file name is studentGrades.txt and the content is inclu...

A: Program Instructions:Comment the unused code and add necessary variables.Use a while and three inner...

Q: What is the name of a domain controller on which changes can't be written? Group of answer choices ...

A: Domain Controller:A domain controller is a server that responds to the demand for security authentic...

Q: Suppose that you want to solve a maximum flow problem containing parallel arcs, but the maximum flow...

A: Maximum Flow ProblemMaximum flow problem is a problem that invloves finding a feasible flow through ...

Q: Draw a decision tree and find the number of key comparisons in the worst and average cases for the t...

A: Decision tree (enhanced bubble sort):

Q: Python   1. Write a for loop (using the range() function) that will print the integers 10,15,20,25,3...

A: Program:#display the statementprint("The integers are: ") #iterate "i" in the range of 10 to 51 with...

Q: Please explain all steps: Exercise 2: A) Suppose the main memory of the Pep/9 were completely filled...

A: A) The Pep/9 has 64K or 65,536 of bytes in the main memory and a unary instruction takes 1 byte. Hen...

Q: Using DeMorgan's Law, write an expression for the complement of F ifF(x,y,z) = xz' (xy + xz)+ xy'(wz...

A: DeMorgan’s law:The theorems of DeMorgan are basically two sets of rules or laws developed for AND, O...

Q: I am having trouble writing a python program that opens a file that contains baby names. One file fo...

A: To run this code, make all the files Boys.txt, Girls.txt and .py files in same folder.input() is use...

Q: A network topology specifies how computers, printers, and other devices are connected over a network...

A: The adjacency matrix shows the neighbor it is connected to, so for ring topology is all nodes are co...

Q: In python I have  N unique coupons that are included in boxes of the cereal being sold. A consumer w...

A: All the lines included after the #(hash) are python comments.To print the N unique coupons:for loop ...

Q: I need help with this programming exercise:   Write a C++ console application that allows your user ...

A: Program code #1:

Q: An administrator has received a call indicating that some users are having difficulty logging on aft...

A: Domain Controller:Domain controller is a server computer on Microsoft servers.The purpose of domain ...

Q: EXPLAIN ALL STEPS: Convert the following assembly language instructions into hexadecimal machine lan...

A: Assembly Language: Assembly language is a low-level language. It is machine dependent language. Asse...

Q: Hi I am coding for java and I am trying to generate 20 numbers in the sequence of  1, 2, 4, 8, 16, 3...

A: In this java program,Print a 20 numbers series in the sequence of 1, 2, 4, 8, 16, 32, ...Print the 5...

Q: This program is written in pseudocode."Design a program that asks the user to enter a store's sales ...

A: Create a C++ program and in the "main" method define an array with name "item" and define a macro wi...

Q: Python 3.7.4 (Introductory Level) You want to know your grade in Computer Science: Write a program t...

A: Program:total_grades = 0n = 0average=0print("Enter the grade:")grades = input()while grades != "stop...

Q: Python 3.7.4 Store four file objects corresponding to the files winter2003.txt , spring2003.txt, sum...

A: Python statements for creating file objects: winter=open("winter2003.txt", "r")spring=open("spring20...

Q: In MS Access, to ensure that a grade must be either A, B, C, D or F, whichvalidation rule should be ...

A: Microsoft (MS) AccessMicrosoft access is a database management system from Microsoft that combines r...

Q: Use the Design Recipe to write a function called running_average that repeatedly asks the user to in...

A: DESIGN RECIPE:Based on the given problem use meaningful variable and function name. And perform the ...

Q: You are a new employee in the engineering organization of a large camping equipment and outdoor furn...

A: Successful implementation of Product Lifecycle Management (PLM) systemA PLM system is an information...

Q: You will write 4 classes for Program 5.  Assignment:The BankAccount class models an account of a cus...

A: Java Program:Filename :- BankAccount.java// Import the required packageimport java.util.Date;// Clas...

Q: Translate the following pseudocode for finding the minimum value from a set of inputs into a Java pr...

A: Java program to find the minimum valueimport java.util.Scanner; public class Program{     Public sta...

Q: Modify songVerse to play "The Name Game" (see OxfordDictionaries.com), by replacing "(Name)" with us...

A: The string variable songVerse will always contain the substring "(Name)".The user has entered the us...

Q: The essential condition of third normal form is automatically satisfied whenA) a table has only one ...

A: To solve this question a user have to know the definition of Third Normal Form (3NF):Third Normal Fo...

Q: in python 3.2 Selling a new vehicle pays a salesperson $1500. Selling a used vehicle pays a commissi...

A: Import local function to use currency formatting in the program.prompt user to enter the type of veh...

Q: Write a loop that reads positive integers from standard input and that terminates when it reads an i...

A: To check the condition that the number is positive and print the sum, count of even and odd integers...

Q: You are asked to write a simple C program that will accept an integer value in the range of 5-95 wit...

A: Each functionality defined in relatively small number of functions to one function that can be reuse...

Q: How can I fix that Traceback (most recent call last):  File "C:\Users\Richard Seegerer\Documents\Pyt...

A: Here you are trying to open a file name module.txt in reading only format. You are utilizing a relat...

Q: program3_1.pyShipping is free for online orders totaling $25 or more at Mississippi.com. Orders less...

A: round() function is used to round the number.Syntax of round function:round(number [, ndigit])number...

Q: Write down two approaches to reduce re-work cost. Inyour opinion how incremental delivery supports b...

A: The two approaches that are used to reduce re-work cost are as follows:Change toleranceChange avoida...

Q: I dont understand how theyre getting the answers to the output public class MysteryWho {public stati...

A: The output of the given program is:

Q: If you are driving across the border into Canada, it is difficult with the road signs in KPHvalues. ...

A: Algorithm-STARTStep1: Import the essential headers.Step2: Define a class Conversion.Step3: Define th...

Q: All programming languages have a loop capability. Looping is the program logic’s ability to repeat o...

A: Program://inlcude the header files#include <iostream>using namespace std; //definition of main...

Q: this is for python

A: Python program to display a diagonal tableThe variables and functions used to solve this problem inc...

Q: Problem 2: Using HTML/JavaScript, find and display the number of multiples of a certain number enter...

A: Program:<!--open the html tag--><html> <!--head tag defines the head portion of a doc...

Q: Why did  Cisco systems transition from a standalone access control system to an IP networked systems...

A: Standalone control systems:Basic access control systems.Used at a single location.Not networked with...