Blockchain-based smart contract invocation method and apparatus, and electronic device

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

• receiving a target transaction that is used to initiate an invocation of a smart contract, wherein the target transaction comprises invocation data, wherein the invocation data comprises a data digest associated with target data, wherein the target data is stored in a second blockchain interconnected with a first blockchain;
• querying the target data associated with the data digest from the second blockchain with a query request, wherein the query request comprises a block number identifying a block of the second blockchain that stores the target data;
• receiving a query result returned by the second blockchain, wherein the query result comprises the target data;
• performing a content verification on the target data;
• determining that the content verification on the target data succeeds;
• in response to determining that the content verification on the target data succeeds, invoking the smart contract to perform a smart contract computation on the target data and the invocation data included in the target transaction;
• and
• storing a computation result from the smart contract computation in a distributed database associated with the first blockchain after the smart contract computation is completed.

A computer-implemented system, comprising:

• one or more computers;
• and
• one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:
• receiving a target transaction that is used to initiate an invocation of a smart contract, wherein the target transaction comprises invocation data, wherein the invocation data comprises a data digest associated with target data, wherein the target data is stored in a second blockchain interconnected with a first blockchain;
• querying the target data associated with the data digest from the second blockchain with a query request, wherein the query request comprises a block number identifying a block of the second blockchain that stores the target data;
• receiving a query result returned by the second blockchain, wherein the query result comprises the target data;
• performing a content verification on the target data;
• determining that the content verification on the target data succeeds;
• in response to determining that the content verification on the target data succeeds, invoking the smart contract to perform a smart contract computation on the target data and the invocation data included in the target transaction;
• and
• storing a computation result from the smart contract computation in a distributed database associated with the first blockchain after the smart contract computation is completed.