Ensuring that all transactions and operations within a blockchain system are transparent and verifiable by stakeholders is a fundamental best practice for fostering trust and accountability. Transparency allows stakeholders to independently verify the integrity of operations, thereby reducing the risk of fraud and enhancing confidence in the system. However, achieving this transparency must be balanced with privacy considerations to protect sensitive information. The “Blockchain-based Transparency Framework for Privacy Preserving Third-party Services” (TAB) addresses this balance by leveraging blockchain technology to enhance transparency and trustworthiness in third-party services. TAB utilizes the Ethereum blockchain to record operations on an immutable ledger and incorporates smart contracts to automate accountability. This framework ensures that stakeholders can verify transactions while preserving privacy, effectively bolstering confidence in the system’s integrity. 

https://arxiv.org/pdf/2102.01249

AML DIRECTIVE (EU) 2015/849 (Recital 14): "enhancing transparency in order to combat the misuse of legal entities, Member States should ensure that beneficial ownership information is stored in a central register located outside the company".