Data-driven innovation is transforming every sector of our digital economy (DE) into a de-centralised marketplace; accommodation (AirBnb), transportation (Uber), logistics (Deliveroo), user-generated vs. broadcast content in the creative industries (YouTube). We are witnessing an inexorable shift from classical models centred upon monolithic institutions, to a dynamic and decentralised economy in which anyone is a potential producer and consumer. A gig economy, underpinned by digital products and services co-created through shorter-lived, diverse peer-to-peer engagements. Yet, the platforms that enable this DE are increasingly built on centralised architectures. These are not controlled by society, but by large organisations making commercial decisions far from the social contexts they affect. There is an urgent need to disrupt this relationship, to deliver proper governance that empowers society to take control of the DE and enables people to assert greater agency over the vast centralised silos of data that drive these platforms. We stand on the cusp of a second wave of DE disruption, driven by bleeding edge data-driven technologies (AI) and secure, distributed data sharing infrastructures such as Distributed Ledger Technologies (DLT), in which data is no longer siloed but becomes a fluid, de-centralised commodity shifting power away from tech giants to individuals and de-centralised organisations. This future Decentralised Digital Economy (DDE) enables people and organisations to work together, to trade, and ultimately to trust via frictionless digital interactions free from reliance upon centralised third parties, but often with reliance upon autonomous services. This shift in agency and power is a game changing opportunity for society to take back control over its digital economy - but we have a limited window of opportunity to get it right. We have already witnessed de-centralisation in the financial sector, where the lack of regulation and clear governance of crypto-currencies has proven a double-edged sword, allowing free exchange of value across the globe, but that is coupled with fraudulent company flotations and currency rates rigged by large mining pools. This is a consequence of technology-driven innovation unchecked by socio-economic insight; a lack of knowledge making policy makers impotent in the face of the tech giants. We are now at the tipping point of similar wide-sweeping disruption across all sectors in the DDE, a transformation that will radically redefine our models of value and how it is created, the ways in which we work, and how we use and extract value from our data. DECaDE represents a critical and timely opportunity to shape this emerging de-centralised digital economy (DDE), to develop insights that define a new 21st century model of work and value creation in the DDE, and ensure a prosperous, safe and inclusive society for all. DECaDE is a 60 month centre, comprising 21 people and building upon over 8.6 million pounds of feasibility scale UKRI/EPSRC investments in DLT and Human Data Interaction (HDI) held by the proposing team. DECaDE is a three-way partnership between the Universities of Surrey and Edinburgh, and the Digital Catapult DLT Field Labs. The latter is a full member of the consortium, through which we have co-created this research programme and with whom we will engage in further co-creation of the future DDE through diverse end-users in the public and private sector to support the competitive position of the UK

AP4L is a 3-year program of interdisciplinary research, centring on the online privacy & vulnerability challenges that people face when going through major life transitions. Our central goal is to develop privacy-by-design technologies to protect & empower people during these transitions. Our work is driven by a narrative that will be familiar to most people. Life often "just happens", leading people to overlook their core privacy and online safety needs. For instance, somebody undergoing cancer treatment may be less likely to finesse their privacy setting on social media when discussing the topic. Similarly, an individual undergoing gender transition may be unaware of how their online activities in the past may shape the treatment into the future. This project will build the scientific and theoretical foundations to explore these challenges, as well as design and evaluate three core innovations that will address the identified challenges. AP4L will introduce a step-change, making online safety and privacy as painless and seamless as possible during life transitions To ensure a breadth of understanding, we will apply these concepts to four very different transitions through a series of carefully designed co-creation activities, devised as part of a stakeholder workshop held in Oct'21. These are relationship breakdowns; LBGT+ transitions or transitioning gender; entering/ leaving employment in the Armed Forces; and developing a serious illness or becoming terminally ill. Such transitions can significantly change privacy considerations in unanticipated or counter-intuitive ways. For example, previously enabled location-sharing with a partner may lead to stalking after a breakup; 'coming out' may need careful management across diverse audiences (e.g - friends, grandparents) on social media. We will study these transitions, following a creative security approach, bringing together interdisciplinary expertise in Computer Science, Law, Business, Psychology and Criminology. We will systematise this knowledge, and develop fundamental models of the nature of transitions and their interplay with online lives. These models will inform the development of a suite of technologies and solutions that will help people navigate significant life transitions through adaptive, personalised privacy-enhanced interventions that meet the needs of each individual and bolster their resilience, autonomy, competence and connection. The suite will comprise: (1) "Risk Playgrounds", which will build resilience by helping users to explore potentially risky interactions of life transitions with privacy settings across their digital footprint in safe ways (2) "Transition Guardians", which will provide real-time protection for users during life transitions. (3) "Security Bubbles", which will promote connection by bringing people together who can help each other (or who need to work together) during one person's life transition, whilst providing additional guarantees to safeguard everyone involved. In achieving this vision, and as evidenced by £686K of in-kind contributions, we will work with 26 core partners spanning legal enforcement agencies (e.g., Surrey Police), tech companies (e.g., Facebook, IBM), support networks (e.g., LGBT Foundation, Revenge Porn Helpline) and associated organisations (e.g., Ofcom, Mastercard, BBC). Impact will be delivered through various activities including a specially commissioned BBC series on online life transitions to share knowledge with the public; use of the outputs of our projects by companies & social platforms (e.g., by incorporating into their products, & by designing their products to take into consideration the findings of our project) & targeted workshops to enable knowledge exchange with partners & stakeholders.