BlockchainHub Graz Meetup #23 - State Channels - Ralph PichlerBlockchainHub Graz
Constaninople and the state of state channels
In recent months there has been a lot of progress in state channel development. Counterfactual released their paper (and some demo code) a while back. Some other projects have also released preliminary code for their implementations. Meanwhile projects like FunFair have been at the forefront of bringing state-channel-like technology into real applications.
In this talk we will look at the current state of state channel technology with a special focus on the implementation and the concepts developed by Counterfactual.
In the beginning we will also take a quick look at the upcoming Constaninople hard fork which is expected for early November and also comes with some important changes that will help with the implementation of state channels.
Ralph Pichler is the organizer of the Ethereum Vienna community and a specialist in smart contract development. At RIAT he leads the Ethereum Academy and coordinates projects and workshops in relation to contract development based on Ethereum and Solidity. Pichler has been an active observer of the Ethereum space since its early days and works as consultant and auditor for smart contract development. Besides that he is also working on developing the storage incentivation layer (also known as Swap, Swear and Swindle) for Swarm.
"Atomic Swaps" allow two parties to exchange tokens from 2 separate blockchains without the need to trust each other or a third-party (like an exchange). In its most basic form both parties create transactions to their trading partner in a way that either outputs from both transactions or none of them can be spent (thus making the exchange of both cryptocurrencies atomic).
Since the activation of SegWit and the upcoming availability of the Lightning Network these types of swaps no longer have to occur on-chain obligatorily, but also can be carried out via the second layer Lightning Network if both chains support it (in fact the design of the Lightning network explicitly considers and enables these types of cross-chain exchanges).
In this talk, Johannes Zweng from Coinfinity shortly outlines the history of the idea of atomic cross-chain trades, how to construct them and what features a blockchain needs to support these and how they will work in the context of the Lightning Network.
BlockchainHub Graz: https://www.meetup.com/de-DE/BlockchainHub-Graz/
Johannes Zweng: https://johannes.zweng.at
BCHGraz - Meetup #16 - Blockchain Real Life Usecases - Dr. Peter TeuflBlockchainHub Graz
Peter gave a great overview how the Austrian Finance is using a real use case for a Blockchain - naturally not a decentralized one. ;-)
Video: https://www.youtube.com/watch?v=enjVlnyjJzU
BCHGraz - Meetup #15 - Blockchain in Real Estate - Walter StrametzBlockchainHub Graz
Walter Strametz is building up the chapter of IBREA in Graz and talked about international projects and activities in the real estate area.
The video about his talk can be found at: https://www.youtube.com/watch?v=xKED8VAm1FE&t=132s
Professor Olinga Ta’eed is Director of the The Centre for Citizenship Enterprise and Governance (CCEG), the world’s leading think tank on the movement of value. He gave a talk about their vision for a Circular Economy based on Values. Established in the UK with academic networks across Europe, Asia and the Americas, CCEG has provided financial and non-financial metrics which underpin global legislation and have become internationally recognised as a standard. He also talks about the latest project, the launch of the Seratio coin.
BlockchainHub Graz Meetup #23 - State Channels - Ralph PichlerBlockchainHub Graz
Constaninople and the state of state channels
In recent months there has been a lot of progress in state channel development. Counterfactual released their paper (and some demo code) a while back. Some other projects have also released preliminary code for their implementations. Meanwhile projects like FunFair have been at the forefront of bringing state-channel-like technology into real applications.
In this talk we will look at the current state of state channel technology with a special focus on the implementation and the concepts developed by Counterfactual.
In the beginning we will also take a quick look at the upcoming Constaninople hard fork which is expected for early November and also comes with some important changes that will help with the implementation of state channels.
Ralph Pichler is the organizer of the Ethereum Vienna community and a specialist in smart contract development. At RIAT he leads the Ethereum Academy and coordinates projects and workshops in relation to contract development based on Ethereum and Solidity. Pichler has been an active observer of the Ethereum space since its early days and works as consultant and auditor for smart contract development. Besides that he is also working on developing the storage incentivation layer (also known as Swap, Swear and Swindle) for Swarm.
"Atomic Swaps" allow two parties to exchange tokens from 2 separate blockchains without the need to trust each other or a third-party (like an exchange). In its most basic form both parties create transactions to their trading partner in a way that either outputs from both transactions or none of them can be spent (thus making the exchange of both cryptocurrencies atomic).
Since the activation of SegWit and the upcoming availability of the Lightning Network these types of swaps no longer have to occur on-chain obligatorily, but also can be carried out via the second layer Lightning Network if both chains support it (in fact the design of the Lightning network explicitly considers and enables these types of cross-chain exchanges).
In this talk, Johannes Zweng from Coinfinity shortly outlines the history of the idea of atomic cross-chain trades, how to construct them and what features a blockchain needs to support these and how they will work in the context of the Lightning Network.
BlockchainHub Graz: https://www.meetup.com/de-DE/BlockchainHub-Graz/
Johannes Zweng: https://johannes.zweng.at
BCHGraz - Meetup #16 - Blockchain Real Life Usecases - Dr. Peter TeuflBlockchainHub Graz
Peter gave a great overview how the Austrian Finance is using a real use case for a Blockchain - naturally not a decentralized one. ;-)
Video: https://www.youtube.com/watch?v=enjVlnyjJzU
BCHGraz - Meetup #15 - Blockchain in Real Estate - Walter StrametzBlockchainHub Graz
Walter Strametz is building up the chapter of IBREA in Graz and talked about international projects and activities in the real estate area.
The video about his talk can be found at: https://www.youtube.com/watch?v=xKED8VAm1FE&t=132s
Professor Olinga Ta’eed is Director of the The Centre for Citizenship Enterprise and Governance (CCEG), the world’s leading think tank on the movement of value. He gave a talk about their vision for a Circular Economy based on Values. Established in the UK with academic networks across Europe, Asia and the Americas, CCEG has provided financial and non-financial metrics which underpin global legislation and have become internationally recognised as a standard. He also talks about the latest project, the launch of the Seratio coin.
BCHGraz - Meetup #11 - Bitsquare DAO by Manfred KarrerBlockchainHub Graz
Bitsquare (rename to Bisq) is the only decentralized exchange in the Bitcoin universe and is about to introduce a DAO (Decentralized Autonomous Organization) handling the future development of the platform and the accompanied payment.
DASH is know for its instant money transfer through Masternodes and a voting mechanism to finance projects. In this talk Valentin gave us a great overview on DASH.
During our BlockchainHub Graz - Meetup #3 we heard a talk from Stefan Kliment about Rootstock and how it will enable smart contracts on the bitcoin blockchain.
Talk @ Crowd Dialog Europe 2016 in Graz / Austria
Blockchain technology is about to decentralize the web.
Platforms like the ones vor crowdfunding could be the next victimes to to that development. But also second markets in connection with equity-based crowdfunding are done with blockchain systems.
BCHGraz - Meetup #11 - Bitsquare DAO by Manfred KarrerBlockchainHub Graz
Bitsquare (rename to Bisq) is the only decentralized exchange in the Bitcoin universe and is about to introduce a DAO (Decentralized Autonomous Organization) handling the future development of the platform and the accompanied payment.
DASH is know for its instant money transfer through Masternodes and a voting mechanism to finance projects. In this talk Valentin gave us a great overview on DASH.
During our BlockchainHub Graz - Meetup #3 we heard a talk from Stefan Kliment about Rootstock and how it will enable smart contracts on the bitcoin blockchain.
Talk @ Crowd Dialog Europe 2016 in Graz / Austria
Blockchain technology is about to decentralize the web.
Platforms like the ones vor crowdfunding could be the next victimes to to that development. But also second markets in connection with equity-based crowdfunding are done with blockchain systems.
6. ICO –RECHTLICH
- Entwickler (Developer) entwickelt Coin
- Developer gibt Coin an Teilnehmer (Participants)
- gegen Zahlung eines Geldbetrags (EUR/USD, etc); oder
- gegen Tausch von anderen Coins (BTC/ETH, etc)
- Rechtliche Einordnung
- Bei Zahlung: Kaufvertrag
- Bei Eintausch: Tauschvertrag
7. ICO ≠ IPO
- ICO ≠ Kapitalmarkt (keine FMA)
- Rechte des Participants?
- wie Eigenkapitalgeber? Nein!
- keine Einsichts-, Kontroll-, oder Mitspracherechte
- wie Fremdkapitalgeber? Nein!
- kein Recht auf laufende Zahlungen, keine Rückzahlung
- (Nur) Rechte eines Käufers
- also v.a. Gewährleistung
- Coin muss technisch erfüllen, was er verspricht
8. ICO – ZULÄSSIGKEIT IN AT?
- Prüfung im Einzelfall
- Ja, wenn insb.:
- Coin keine Rechte gegenüber Developer verbrieft
- (Selbstverpflichtung ohne Rechtsanspruch zulässig)
- Kein Anspruch auf Rückzahlung/Umtausch
- Rechtliches Prozedere einzuhalten
- V.a. Informationspflichten (Rücktrittsrechte!)