33 research outputs found

    From Reality Keys to Oraclize. A Deep Dive into the History of Bitcoin Oracles

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    Before the advent of alternative blockchains such as Ethereum, the future of decentralization was all in the hands of Bitcoin. Together with Nakamoto itself, early developers were trying to leverage Bitcoin potential to decentralize traditionally centralized applications. However, being Bitcoin a decentralized machine, available non-trustless oracles were considered unsuitable. Therefore, strategies had to be elaborated to solve the so-called oracle problem in the newborn scenario. By interviewing early developers and crawling early forums and repositories, this paper aims to retrace and reconstruct the chain of events and contributions that gave birth to oracles on Bitcoin. The evolution of early trust models and approaches to solving the oracle problem is also outlined. Analyzing technical and social barriers to building oracles on Bitcoin, the transition to Ethereum will also be discussed.Comment: Literature background and methodology are deliberately omitted at this stage (preprint). To improve readability for a broader audience, the content is presented more like a stor

    Beyond oracles – a critical look at real-world blockchains

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    This thesis intends to provide answers to the following questions: 1) What is the oracle problem, and how do the limitations of oracles affect different real-world applications? 2) What are the characteristics of the portion of the literature that leaves the oracle problem unaddressed? 3) Who are the main contributors to solving the oracle problem, and which issues are they focusing on? 4) How can the oracle problem be overcome in real-world applications? The first chapter aims to answer the first question through a literature review of the most current papers published in the field, bringing clarity to the blockchain oracle problem by discussing its effects in some of the most promising real-world blockchain applications. Thus, the chapter investigates the sectors of Intellectual Property Rights (IPRs), healthcare, supply chains, academic records, resource management, and law. By comparing the different applications, the review reveals that heterogeneous issues arise depending on the sector. The analysis supports the view that the more trusted a system is, the less the oracle problem has an impact. The second chapter presents the results of a systematic review intended to highlight the state-of-the-art of real-world blockchain applications using the oracle problem as a lens of analysis. Academic papers proposing real-world blockchain applications were reviewed to see if the authors considered the oracle’s role in the applications and related issues. The results found that almost 90% of the inspected literature neglected the role of oracles, thereby proposing incomplete or irreproducible projects. Through a bibliometric analysis, the third chapter sheds light on the institutions and authors that are actively contributing to the literature on oracles and promoting progress and cooperation. The study shows that, although there is still a lack of collaboration worldwide, there are dedicated authors and institutions working toward a similar and beneficial cause. The results also make it clear that most areas of oracle research are poorly addressed, with some remaining untouched. The fourth and last chapter focuses on a case study of a dairy company operating in the northeast region of Italy. The company applied blockchain technology to support the traceability of their products worldwide, and the study investigated the benefits of their innovation from the point of view of sustainability. The study also considers the role of oracle management, as it is a critical aspect of a blockchain-based project. Thus, the relationship between the company, the blockchain oracle, and the supervising authority is discussed, offering insight into how sustainable innovations can positively impact supply chain management. This work as a whole aims to shed light on blockchain oracles as an academic area of research, explaining why the study of oracles should be considered the backbone of blockchain literature development

    THEƌRIA: THE VENERATION OF ICONS VIA THE TECHNOETIC PROCESS

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    The Second Council of Nicaea, in 787 AD, marked the end of iconoclasm, while in 843 the Treaty of Verdun laid the foundations of Europe. With these agreements, a sustained period of imageless iconolatry was initiated. However, the veneration of icons was based on the absolute worship of matter and form, which replaced the prime spiritual concept of ‘image and likeness’. Millennia of research and thought resulted in imageless representations of natural phenomena. Pushing aside the topology of the image and its sign, the intelligent man, from the Age of Reason and onward, considered himself as an auto-authorised and teleological-free entity. To this end, he maximised the intelligibility of his space by designing an all-inclusive Cartesian cocoon in which to secure his mass and form. Yet, there he found his pet (Schrodinger’s Cat) to be both dead and alive, and the apple, still forbidden, had become a bouncing ball, serving as evidence of gravity. Hence, this intelligent design, by default, carries the residual fear of Manichaean and Augustinian devils, and is deemed to have converted to a de-sign crisis. Relying on literature sources, this dissertation examines two dominant models that govern human cognition and the production of knowledge. Despite remarkable scientific achievements which resulted, the aftermath of human progress was, among others, the maximisation of residual fear, to such an extent that voracious black holes devour all matter. Inaugurating the transhumanist period, the human becomes a Manchurian Candidate, still an upgraded ape and a victim of his own nature in the Anthropocene. In an attempt to overcome this de-sign crisis, the research presented in this thesis aims to address the necessity of the restoration of icons, as evidenced by Byzantine art and philosophy but neglected in the name of human supremacy and imperialism. This thesis elucidates Classical and Late Antiquity manuscripts in an effort to set a new ‘restore point’, endeavouring to launch the image in the current organosilicon substances; examples from Scripture narratives as well as from visual arts contribute to this effort. The proposed concluding scheme is the Module of Theƍria, which reflects the major transhumanistic elements such as transmutation, interaction and fluidity. Theƍria functions through noetic mechanisms, using ‘image and likeness’ as the prime carriers of knowledge. The anticipated outcome is to reveal a human investment in a pro-nature incorruptibility with the advent of Theƍria in the field of ΀echnoetics, where one can administer ‘image and likeness’ to gain capital liquidity

    Multimodal Content Delivery for Geo-services

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    This thesis describes a body of work carried out over several research projects in the area of multimodal interaction for location-based services. Research in this area has progressed from using simulated mobile environments to demonstrate the visual modality, to the ubiquitous delivery of rich media using multimodal interfaces (geo- services). To effectively deliver these services, research focused on innovative solutions to real-world problems in a number of disciplines including geo-location, mobile spatial interaction, location-based services, rich media interfaces and auditory user interfaces. My original contributions to knowledge are made in the areas of multimodal interaction underpinned by advances in geo-location technology and supported by the proliferation of mobile device technology into modern life. Accurate positioning is a known problem for location-based services, contributions in the area of mobile positioning demonstrate a hybrid positioning technology for mobile devices that uses terrestrial beacons to trilaterate position. Information overload is an active concern for location-based applications that struggle to manage large amounts of data, contributions in the area of egocentric visibility that filter data based on field-of-view demonstrate novel forms of multimodal input. One of the more pertinent characteristics of these applications is the delivery or output modality employed (auditory, visual or tactile). Further contributions in the area of multimodal content delivery are made, where multiple modalities are used to deliver information using graphical user interfaces, tactile interfaces and more notably auditory user interfaces. It is demonstrated how a combination of these interfaces can be used to synergistically deliver context sensitive rich media to users - in a responsive way - based on usage scenarios that consider the affordance of the device, the geographical position and bearing of the device and also the location of the device
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