An example operation may in one or more of receiving a request to execute a cross-chain
transaction, identifying disparate locations of two or more different blockchains that have
stored therein data for the cross-chain transaction, retrieving data from data blocks of the two
or more different blockchains, respectively, based on the identified disparate locations,
executing the cross-chain transaction which takes the retrieved data from the two or more
different blockchains as inputs to generate a cross-chain result, and storing the cross-chain …

An example operation may include one or more of storing, via a master chain, partition
information that links together storage across a plurality of blockchains, receiving a request
to execute a blockchain transaction from a client, determining whether the blockchain
transaction is associated with data stored on one blockchain or data stored separately on
different blockchains based on the partition information stored on the master chain, and, in
response to a determination that the blockchain transaction is associated with data stored …