A supply chain for a batch of identical units is provided. The supply chain includes database architecture. The batch of units may include a distributed ledger (blockchain) identification (ID), and at least two additional pieces of information. The information includes a serial number of the batch, a location of manufacture of the batch, an ID associated with the source of the batch, and/or the ID(s) of one or more components of each unit in the batch. The supply chain may include a private database supplier key. The supplier key enables publishing of batch transaction information onto a blockchain. The information may include a transfer of control of the batch from the supplier to a receiver-manufacturer. The supply chain may further include a private database receiver-manufacturer key associated with each batch associated with the receiver-manufacturer. The private database manufacturer key enables the receiver-manufacturer to review transactions associated with each batch.
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