Uma Arquitetura Baseada em Blockchain para Comunicação
entre Sistemas de Acesso ao Espectro

Abstract: This paper proposes an architecture for Spectrum Access Systems
(SAS) integrated with permissioned blockchain technology to enhance security,
traceability, and interoperability in the communication among different SAS ins-
tances. The approach leverages smart contracts to automate data usage agre-
ements, device registration, and spectrum coordination, replacing traditional
REST interfaces with a distributed and auditable infrastructure. The proposed
model is validated through a practical implementation using Hyperledger Besu,
demonstrating feasibility and compliance with regulatory requirements. The hy-
brid solution offers advantages such as data immutability, shared governance,
and operational resilience.

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