Structural Information and Communication Complexity 30th International Colloquium, SIROCCO 2023, Alcalá de Henares, Spain, June 6–9, 2023, Proceedings

30th Anniversary track.- Degree Realization by Bipartite Multigraphs.- Thirty years of SIROCCO. A data and graph mining comparative analysis of its temporal evolution.- About Informatics, Distributed Computing, and our Job: a Personal View.- Learning Hierarchically-Structured Concepts II:  Overlapping Concepts, and Networks With Feedback.- SIROCCO Main track.- Distributed Coloring of Hypergraphs.- Lockless Blockchain  Sharding with Multiversion Control.- Lockless Blockchain  Sharding with Multiversion Control.- Compatibility of convergence algorithms for autonomous mobile robots.- FnF-BFT: A BFT protocol with provable performance under attack.- Divide & Scale: Formalization and Roadmap to Robust Sharding.- Zero-Memory Graph Exploration with Unknown Inports.- The Energy Complexity of Diameter and Minimum Cut Computation in Bounded-genus Networks.- Search and Rescue on the Line.- Routing Schemes for Hybrid Communication Networks in Unit-Disk Graphs.- Distributed Half-Integral Matching and Beyond.- Boundary Sketching with Asymptotically Optimal Distance and Rotation.- Cops & Robber on Periodic Temporal Graphs : Characterization and Improved Bounds.- Minimum Cost Flow in the CONGEST Model.- The communication complexity of functions with large outputs.- On the Power of Threshold-Based Algorithms for Detecting Cycles in the CONGEST model.-  Energy-Efficient Distributed Algorithms for Synchronous Networks.- Spanning Trees with Few Branch Vertices in Graphs of Bounded Neighborhood Diversity.- Overcoming Probabilistic Faults in Disoriented Linear Search.- Packet Forwarding with Swaps.- Exact Distributed Sampling.- Weighted Packet Selection for Rechargeable Links in Cryptocurrency Networks: Complexity and Approximation.