| 1. |
- Altman, Eitan, et al.
(författare)
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Blockchain Competition Between Miners: A Game Theoretic Perspective
- 2020
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Ingår i: Frontiers in Blockchain. - : Frontiers Media SA. - 2624-7852. ; 2
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Tidskriftsartikel (refereegranskat)abstract
- We model the competition over mining resources and over several cryptocurrencies as a non-cooperative game. Leveraging results about congestion games, we establish conditions for the existence of pure Nash equilibria and provide efficient algorithms for finding such equilibria. We account for multiple system models, varying according to the way that mining resources are allocated and shared and according to the granularity at which mining puzzle complexity is adjusted. When constraints on resources are included, the resulting game is a constrained resource allocation game for which we characterize a normalized Nash equilibrium. Under the proposed models, we provide structural properties of the corresponding types of equilibrium, e.g., establishing conditions under which at most two mining infrastructures will be active or under which no miners will have incentives to mine a given cryptocurrency.
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| 2. |
- Barinaga, Ester
(författare)
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A route to commons-based democratic monies? Embedding the governance of money in traditional communal institutions
- 2020
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Ingår i: Frontiers in Blockchain. - : Frontiers Media SA. - 2624-7852. ; 3
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Tidskriftsartikel (refereegranskat)abstract
- The financial crisis of 2008 resulted, among other, on a popular awareness that the monetary system was not working for the interest of the many. The blockchain technology that was launched soon after offered monetary activists and entrepreneurs a tool to re-imagine, re-claim and re-organize money along a vague ideal of a commons paradigm. A wave of monetary experimentation ensued that took a most concrete form in two entrepreneurial spaces: crypto-currencies with global ambitions and local currencies based on communal democracy. Seemingly distinct on the outset, both strands share a determination to develop a monetary system that serves the many. This has led participants on both sides to reach out toward each other. The article looks at one such attempt: the Sarafu community crypto-currencies in Kenya. These currencies are embedding the creation of money in traditional community savings groups. Using Eleanor Ostrom’s framework and building on interview and ethnographic material, the article identifies the economic logic of mutualization proper of the savings groups as one that transforms private assets (one’s savings) into a financial commons for the group. To build on this logic, the Sarafu model in-the-making is embedding the production and governance of the new community cryptocurrencies in these saving groups. In that doing, Sarafu has the potential to advance a new architecture of money. However, findings suggest that the standardization and automation of the new monetary rules through smart contracts impose neoliberal ideas that slipped into the code, risking the erosion of the very communal decision-making processes that made savings groups interesting anchors of a money commons in the first place.
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| 3. |
- Singh, Christina, et al.
(författare)
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Coffee producers' perspectives of blockchain technology in the context of sustainable global value chains
- 2022
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Ingår i: FRONTIERS IN BLOCKCHAIN. - : Frontiers Media SA. - 2624-7852. ; 5
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Tidskriftsartikel (refereegranskat)abstract
- Transparency and equitability are key for improved sustainability outcomes in global value chains. Blockchain technology has been touted as a tool for achieving these ends. However, due to the limited empirical evidence, claims on transparency and sustainability benefits are largely theoretical. We lack an understanding of the benefits and drawbacks for upstream actors within global value chains and how this affects technology adoption. Addressing this gap, we conduct an empirical study to identify the drivers and obstacles for coffee producers in Colombia in adopting blockchain. We base our research on an event-driven and permissioned blockchain model, specifically designed for this research. Applying the Participation Capacity Framework and conducting semi-structured interviews with coffee producers and key informants, we analyze adoption attitudes towards the blockchain application. We further identify opportunities and drawbacks from the producers' perspective. We set these findings in the context of the Global Value Chain research, considering the existing power relations in the coffee value chain. The top-down nature of blockchain projects raises distributive concerns, as resource investments, implementation burden, and risks are significantly higher upstream, whereas downstream lead firms will benefit most. We identify data squeeze as an additional channel of sustainable supplier squeeze relevant in the case of blockchain initiatives. Data squeeze implies lead firms turning the data obtained through, likely unpaid, labour of blockchain participants into a monetizable assets and marketable value through branding and advertisement. Based on the findings, we identify potential design dimensions and implementation features that can contribute to materializing producer benefits, thus mitigating the risk of a sustainability-driven supplier squeeze.
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