US Patent 11645376 Device-based database system

An example operation may include one or more of submitting a part replacement request to replace a first part of a device, qualifying a second part and repair resources, issue a part replacement transaction to the blockchain network, endorse the part replacement transaction by the plurality of blockchain peers, and replace the first part with the second part. The first part includes a blockchain peer of a plurality of blockchain peers and the device includes a blockchain network including a plurality of parts each corresponding to one of the plurality of blockchain peers.