Estimation 2 Basic building block 1 Behaviour models 1 Blockchain 1 Blockchain Technology 1 Consumer spending 1 Convergence 1 Covariance matrices 1 Covariance matrix 1 Covariance matrix estimation 1 Cryptography 1 Data privacy 1 Decentralised 1 Digital Hash Data Encryption (DHDE) 1 Directed graphs 1 Dispersion 1 Dispersion matrix 1 Dispersions 1 Distributed computer systems 1 Distributed database 1 Distributed databases 1 Eigenvalue and eigenfunctions 1 Eigenvalues and eigenfunctions 1 Ethereum 1 Euclidean spaces 1 Financial data processing 1 Geometry 1 Graph neural networks 1 Heavily-tailed distribution 1 Heavy Tails 1