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Block Shots - Blockchain in 5 minutes!

Technology Podcasts

Block Shots is a podcast for blockchain beginners that provides a basic understanding of the most important blockchain concepts in five minutes. Learn blockchain, consensus, hashing, signing, governance, nodes, etc. and many more concepts while having that morning coffee, or while walking towards your car in the parking, or whenever you have those five minutes.

Block Shots is a podcast for blockchain beginners that provides a basic understanding of the most important blockchain concepts in five minutes. Learn blockchain, consensus, hashing, signing, governance, nodes, etc. and many more concepts while having that morning coffee, or while walking towards your car in the parking, or whenever you have those five minutes.

Location:

Germany

Description:

Block Shots is a podcast for blockchain beginners that provides a basic understanding of the most important blockchain concepts in five minutes. Learn blockchain, consensus, hashing, signing, governance, nodes, etc. and many more concepts while having that morning coffee, or while walking towards your car in the parking, or whenever you have those five minutes.

Language:

English


Episodes

On-Chain vs. Off-Chain data

10/5/2020
The basic design principle of using blockchain in real systems is that only the minimum amount of data should be recorded on the chain.

Duration:00:04:49

Decentralized vs. Distributed Systems

9/28/2020
Decentralized systems are much more secure and unhackable as compared to centralized distributed systems, they are also relatively slower for the same reasons and characteristics.

Duration:00:04:21

Multi-Signature Wallets

9/21/2020
Multi-signature wallets are used to execute blockchain transactions that require more than one signatures.

Duration:00:04:50

Episode 25 - Multi-Signature Wallets (MultiSigs)

9/20/2020
Every transaction in a blockchain is signed by the sender. The signing of transactions is done using cryptographic signing algorithms, as described in episode 6 of the podcast. In some scenarios, to perform an operation on the blockchain, there is a need to have more than one signatures on a transaction. Think of bank accounts with joint holders. Similarly, blockchain wallets could also be owned jointly by a group of accounts. These wallets are called multi-signature wallets or multi-sigs....

Duration:00:04:50

Initial Coin Offering (ICO)

9/14/2020
To fund blockchain startups, the founders do ICOs to sell tokens to potential users as a future right to use the application.

Duration:00:04:40

Episode 24 - Initial Coin Offering (ICO)

9/13/2020
Generally, to start a technology business, there’s some initial funding required to build the product. Generally, this is done using conventional ways like VC funding or bank loans. The VCs give money and they take some ownership in the company. There is another way of funding, called crowdfunding. Instead of asking a few VCs and/or banks to give you money, you ask a large number of people to fund your startup and in return, you either give them stake or a right to use your application. One...

Duration:00:04:39

Tokens

9/7/2020
Tokens are digital assets representing a user's right to use a system/service/application or to participate in a process based on blockchain.

Duration:00:04:38

Episode 23 - Tokens

9/6/2020
Tokens are digital assets representing a user’s right to use a system/service/application or to participate in a process based on blockchain. Tokens are similar to cryptocurrencies in terms of issuance and distribution, but they are different in terms of value. A cryptocurrency can be used as a medium of exchange, while a token has value only utility or security value. Tokens are mainly of two types — utility tokens and security tokens. Utility tokens are used to represent a user’s right to...

Duration:00:04:38

Proof of Stake

8/31/2020
Proof of Stake is a blockchain consensus algorithm where the nodes put an economic value on stake to participate in block production.

Duration:00:04:32

Episode 22 - Proof of Stake

8/30/2020
Proof of Stake is a blockchain consensus algorithm where the nodes put an economic value on stake to participate in block production. The problem domain is the same — to find out who should produce the next block for the blockchain. In PoS networks, the block producing nodes are called validator nodes. The reason being — the consensus on blocks is reached via validation and voting and not through winning a race (as in the proof of work networks). In PoS, the solution is two-fold. First of...

Duration:00:04:32

Proof of Work

8/24/2020
Proof of work is basically about producing some data that can be verified easily, but it is hard to produce. In the Bitcoin blockchain, this data is a hash with a predefined number of zeroes as its prefix.

Duration:00:04:57

Episode 21 - Proof of Work

8/23/2020
Blockchains are updated by adding new blocks at the end of the chain. In a permissionless and decentralized network, it is hard to find out who (which node) gets to add the next block. This is like selecting something from a collection of things. One way of selecting one thing from a group of things is to get them to race against each other. Whoever wins gets selected. This is also how proof of work is used for selecting a miner node from the network of multiple nodes to produce the next...

Duration:00:04:57

Double Spends

8/17/2020
Double spend is a scenario when digital currency could be spent more than once because of blockchain network forks.

Duration:00:04:58

Episode 20 - Double Spend

8/16/2020
In the case of fiat currency, when you spend it, you physically hand over the currency note to the other party. Also, in case of a bank transfer of fiat currency, the update of balances in sender and receiver accounts is done by a centralized server having full control of the transaction and the accounts. In both scenarios, in fiat currency, it is made sure that what is spent is actually spent. But in the case of a decentralized system with digital currency, there could be scenarios that the...

Duration:00:04:58

Transaction Fee

8/10/2020
In a blockchain, the transaction fee is the fee paid to blockchain nodes to include the transaction in a block. Generally, the transaction fee is paid in the native cryptocurrency of the blockchain.

Duration:00:04:51

Episode 19 - Transaction Fee

8/9/2020
In a blockchain, the transaction fee is the fee paid to blockchain nodes to include the transaction in a block. Generally, the transaction fee is paid in the native cryptocurrency of the blockchain. For example, in the Bitcoin blockchain, the fee is paid in satoshis which is a smaller denomination of bitcoin. Nodes — software and hardware. Each transaction execution and verification is consuming CPU and memory on the node. The cost to keep the node running with the optimal hardware needs to...

Duration:00:04:52

Block Rewards

8/3/2020
Block rewards are a way to incentivize the nodes for creating new blocks and contributing to the decentralization and security of the blockchain.

Duration:00:04:48

Episode 18 - Blockchain Economics: Part 2 (Rewards)

8/2/2020
The blockchain grows when new blocks are added. The creation of new blocks requires validation of transactions and including them in blocks by the blockchain nodes. Block rewards are a way to incentivize the nodes for creating new blocks and contributing to the decentralization and security of the blockchain. Another reason for block rewards is the need to have the cryptocurrency in circulation. For any financial system to work, there must be enough currency in circulation so that the goods...

Duration:00:04:48

Blockchain Economics: Part 1 - Basics

7/27/2020
Blockchain economics - what, why, and how. Block rewards, incentives, transaction fees, cryptocurrency supply, and demand.

Duration:00:04:55

Episode 17 - Blockchain Economics: Part 1

7/26/2020
Bitcoin was created as an alternate financial system after the subprime crisis of 2008. Banks, having too much control over people’s money, failed as a result of the crisis, and a lot of people lost their money. Bitcoin was created as a financial system where no single party had full control. When a new financial system is created, there are a few things to make sure of: * Having a medium of exchange i.e. currency. * Having enough circulation of the currency to balance its supply and demand....

Duration:00:04:55