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A robust custody solution should consider advanced technologies to ensure the security and integrity of stored value. One option is a private and permissioned blockchain, which can serve as the backbone for transaction integrity and auditing, providing a reliable mechanism for tracking asset movements. The design of such blockchains assures that transactions are both auditable and immutable, which is crucial for maintaining trust and security. While a simple database can provide some of these functions, a private blockchain delivers them out of the box, offering enhanced security, transparency, and reliability.