Blockchain at Universität Bamberg | Flashcards & Summaries

Lernmaterialien für Blockchain an der Universität Bamberg

Greife auf kostenlose Karteikarten, Zusammenfassungen, Übungsaufgaben und Altklausuren für deinen Blockchain Kurs an der Universität Bamberg zu.

TESTE DEIN WISSEN

Basic Principles of Blockchain technology

Lösung anzeigen
TESTE DEIN WISSEN

Distributed Database

Peer-to-Peer Transmission

Transparency with Pseudonymity

Irreversibility of Records

Computational Logic

Transaction Speed

Lösung ausblenden
TESTE DEIN WISSEN

Impact Blockchain on financial services

Lösung anzeigen
TESTE DEIN WISSEN

• Blockchain has great potential to reduce costs and increase efficiencies through

the establishment of new financial services processes

• The technology should be viewed as one of many technologies that will form the

foundation of next generation financial services infrastructure

• Blockchain-based financial services infrastructure will redraw processes and call

into question orthodoxies that are foundational to today’s business models

• Blockchain has potential applications in different industry, each leveraging the

technology in different ways for a diverse range of benefits

• Digital Identity, a critical enabler offered by blockchain, has broader applications.

Blockchain-based technology has the ability to amplify benefits.

• Successful blockchain applications require deep collaboration between

incumbents, innovators, and regulators, adding complexity and delaying

implementation.

Lösung ausblenden
TESTE DEIN WISSEN

Distributed ledger technology

Lösung anzeigen
TESTE DEIN WISSEN

Decentralized, continuously growing list of records(blocks),

across a peer-to-peer network that are linked and secured using cryptography.

Each block typically contains a cryptographic hash of the previous block, a

timestamp, and transaction data, and contains the information from all previous

blocks and transactions to create a network or chain

Lösung ausblenden
TESTE DEIN WISSEN

Public Blockchain

Lösung anzeigen
TESTE DEIN WISSEN

Also called permissionlessor open blockchains

•Dispose of the middlemen; accessible by anyone with a computer & internet access

•Purely decentralized

•E.g. Ethereum, Bitcoin

Lösung ausblenden
TESTE DEIN WISSEN

Qualities of the Blockchain

Lösung anzeigen
TESTE DEIN WISSEN

• Process integrity

• Valuable redundancy

• Shared control

• Data security (transparent and incorruptible)

Lösung ausblenden
TESTE DEIN WISSEN

Private Blockchain

Lösung anzeigen
TESTE DEIN WISSEN

Also called permissioned or closed blockchains

•Permission network with a restricted group of known and trusted participants

•Used for internal processes within companies –or for processes between a limited set of companies

•E.g. HyperledgerFabric, Ripple, Quorum

Lösung ausblenden
TESTE DEIN WISSEN

Main Types of Blockchain

Lösung anzeigen
TESTE DEIN WISSEN

Private 

Public 

most applicable where a pure decentralized transaction is needed.

Hybrid (mix of both - separated)

--> Highly regulated enterprises and governments 

For example XinFin is a hybrid blockchain built on Ethereum (public) and Quorum (private).

Lösung ausblenden
TESTE DEIN WISSEN

Updateable via consensus


Lösung anzeigen
TESTE DEIN WISSEN

Finally, the most critical attribute of a blockchain is that it is updateable only via consensus.

This is what gives it the power of decentralization. In this scenario, no central authority is in

control of updating the ledger. Instead, any update made to the blockchain is validated

against strict criteria defined by the blockchain protocol and added to the blockchain only

after a consensus has been reached among all participating peers/nodes on the network. To

achieve consensus, there are various consensus facilitation algorithms which ensure that all

parties are in agreement about the final state of the data on the blockchain network and

resolutely agree upon it to be true. Consensus algorithms are discussed later in this chapter

and throughout the book as appropriate

Lösung ausblenden
TESTE DEIN WISSEN

Append-only

Lösung anzeigen
TESTE DEIN WISSEN

Another property that we encounter is that blockchain is append-only, which means that

data can only be added to the blockchain in time-ordered sequential order. This property

implies that once data is added to the blockchain, it is almost impossible to change that data

and can be considered practically immutable

Lösung ausblenden
TESTE DEIN WISSEN

Cryptographically-secure

Lösung anzeigen
TESTE DEIN WISSEN

Next, we see that this ledger is cryptographically-secure, which means that cryptography has

been used to provide security services which make this ledger secure against tampering and

misuse. These services include non-repudiation, data integrity, and data origin

authentication. You will see how this is achieved later in Chapter 3, Symmetric Cryptography

which introduces the fascinating world of cryptography

Lösung ausblenden
TESTE DEIN WISSEN

Peer-to-peer

Lösung anzeigen
TESTE DEIN WISSEN

The first keyword in the technical definition is peer-to-peer. This means that there is no

central controller in the network, and all participants talk to each other directly. This

property allows for cash transactions to be exchanged directly among the peers without a

third-party involvement, such as by a bank.

Lösung ausblenden
TESTE DEIN WISSEN

What is a distributed system?

Lösung anzeigen
TESTE DEIN WISSEN

Distributed systems are a computing paradigm whereby two or more nodes work with

each other in a coordinated fashion to achieve a common outcome. It is modeled in such a

way that end users see it as a single logical platform. For example, Google's search engine is

based on a large distributed system, but to a user, it looks like a single, coherent platform.

A node can be defined as an individual player in a distributed system. All nodes are capable of sending and receiving messages to and from each other.

Lösung ausblenden
  • 19743 Karteikarten
  • 896 Studierende
  • 36 Lernmaterialien

Beispielhafte Karteikarten für deinen Blockchain Kurs an der Universität Bamberg - von Kommilitonen auf StudySmarter erstellt!

Q:

Basic Principles of Blockchain technology

A:

Distributed Database

Peer-to-Peer Transmission

Transparency with Pseudonymity

Irreversibility of Records

Computational Logic

Transaction Speed

Q:

Impact Blockchain on financial services

A:

• Blockchain has great potential to reduce costs and increase efficiencies through

the establishment of new financial services processes

• The technology should be viewed as one of many technologies that will form the

foundation of next generation financial services infrastructure

• Blockchain-based financial services infrastructure will redraw processes and call

into question orthodoxies that are foundational to today’s business models

• Blockchain has potential applications in different industry, each leveraging the

technology in different ways for a diverse range of benefits

• Digital Identity, a critical enabler offered by blockchain, has broader applications.

Blockchain-based technology has the ability to amplify benefits.

• Successful blockchain applications require deep collaboration between

incumbents, innovators, and regulators, adding complexity and delaying

implementation.

Q:

Distributed ledger technology

A:

Decentralized, continuously growing list of records(blocks),

across a peer-to-peer network that are linked and secured using cryptography.

Each block typically contains a cryptographic hash of the previous block, a

timestamp, and transaction data, and contains the information from all previous

blocks and transactions to create a network or chain

Q:

Public Blockchain

A:

Also called permissionlessor open blockchains

•Dispose of the middlemen; accessible by anyone with a computer & internet access

•Purely decentralized

•E.g. Ethereum, Bitcoin

Q:

Qualities of the Blockchain

A:

• Process integrity

• Valuable redundancy

• Shared control

• Data security (transparent and incorruptible)

Mehr Karteikarten anzeigen
Q:

Private Blockchain

A:

Also called permissioned or closed blockchains

•Permission network with a restricted group of known and trusted participants

•Used for internal processes within companies –or for processes between a limited set of companies

•E.g. HyperledgerFabric, Ripple, Quorum

Q:

Main Types of Blockchain

A:

Private 

Public 

most applicable where a pure decentralized transaction is needed.

Hybrid (mix of both - separated)

--> Highly regulated enterprises and governments 

For example XinFin is a hybrid blockchain built on Ethereum (public) and Quorum (private).

Q:

Updateable via consensus


A:

Finally, the most critical attribute of a blockchain is that it is updateable only via consensus.

This is what gives it the power of decentralization. In this scenario, no central authority is in

control of updating the ledger. Instead, any update made to the blockchain is validated

against strict criteria defined by the blockchain protocol and added to the blockchain only

after a consensus has been reached among all participating peers/nodes on the network. To

achieve consensus, there are various consensus facilitation algorithms which ensure that all

parties are in agreement about the final state of the data on the blockchain network and

resolutely agree upon it to be true. Consensus algorithms are discussed later in this chapter

and throughout the book as appropriate

Q:

Append-only

A:

Another property that we encounter is that blockchain is append-only, which means that

data can only be added to the blockchain in time-ordered sequential order. This property

implies that once data is added to the blockchain, it is almost impossible to change that data

and can be considered practically immutable

Q:

Cryptographically-secure

A:

Next, we see that this ledger is cryptographically-secure, which means that cryptography has

been used to provide security services which make this ledger secure against tampering and

misuse. These services include non-repudiation, data integrity, and data origin

authentication. You will see how this is achieved later in Chapter 3, Symmetric Cryptography

which introduces the fascinating world of cryptography

Q:

Peer-to-peer

A:

The first keyword in the technical definition is peer-to-peer. This means that there is no

central controller in the network, and all participants talk to each other directly. This

property allows for cash transactions to be exchanged directly among the peers without a

third-party involvement, such as by a bank.

Q:

What is a distributed system?

A:

Distributed systems are a computing paradigm whereby two or more nodes work with

each other in a coordinated fashion to achieve a common outcome. It is modeled in such a

way that end users see it as a single logical platform. For example, Google's search engine is

based on a large distributed system, but to a user, it looks like a single, coherent platform.

A node can be defined as an individual player in a distributed system. All nodes are capable of sending and receiving messages to and from each other.

Blockchain

Erstelle und finde Lernmaterialien auf StudySmarter.

Greife kostenlos auf tausende geteilte Karteikarten, Zusammenfassungen, Altklausuren und mehr zu.

Jetzt loslegen

Das sind die beliebtesten Blockchain Kurse im gesamten StudySmarter Universum

blockchain

Hochschule Furtwangen

Zum Kurs

Die all-in-one Lernapp für Studierende

Greife auf Millionen geteilter Lernmaterialien der StudySmarter Community zu
Kostenlos anmelden Blockchain
Erstelle Karteikarten und Zusammenfassungen mit den StudySmarter Tools
Kostenlos loslegen Blockchain