Miner rewards & transactions - Blockchain in Javascript (part 3)

Miner rewards & transactions – Blockchain in Javascript (part 3)

hey everyone my name is Sofia and in this video we will continue working on our little JavaScript blockchain implementation in the last two videos we created our blockchain and we secured it with the proof-of-work algorithm in this video I'm going to expand it a little bit and make it a simple cryptocurrency to

SQL Tutorial - 08 - Transaction - Begin Work, Commit, Rollback

SQL Tutorial – 08 – Transaction – Begin Work, Commit, Rollback

The transaction controls lets us execute agroup of update statements as if they were a single operation. So that if one of themfails all the statements are aborted. The BEGIN WORK statement marks the start ofa database transaction. We can then execute any number of data manipulationstatements. These changes won't be visible to other usersuntil

How to choose a broker - MoneyWeek Investment Tutorials

How to choose a broker – MoneyWeek Investment Tutorials

okay so in today's video we're gonna have a think about how we go about choosing a broker there are after all countless numbers of brokers out there you see their adverts all over the place but the question is how do you go about choosing one most of us don't need loads of brokers

Why I Hate The Robinhood App Brokerage | 6 Reasons Why

Why I Hate The Robinhood App Brokerage | 6 Reasons Why

How safe is contactless payment? || How does RFID & NFC work? || EB#40

How safe is contactless payment? || How does RFID & NFC work? || EB#40

nowadays it is becoming more and more common to use a service like for example Google pay to like the name implies pay for something in a store without using cash even I use a contactless payment methods with my Charu cards which I only have to hold in front of card reader in a

Signing transactions - Blockchain in Javascript (part 4)

Signing transactions – Blockchain in Javascript (part 4)

welcome back to the blockchain in JavaScript series in the previous three videos we have created a simple blockchain in JavaScript we added proof of work and we added transactions and mining rewards but there is a small problem with our current version and that is that anyone can make any transaction that he wants

How to Buy a Stock Without a Broker?

How to Buy a Stock Without a Broker?