Distributed storage of custom clearance data

A system for custom clearance data storage, comprising:

• one or more processors;
• and
• one or more computer-readable memories coupled to the one or more processors and having instructions stored thereon that are executable by the one or more processors to perform operations comprising:
• receiving data for storage from a service platform, wherein the data includes mutable data, immutable data, and index data identified by the service platform;
• encrypting, using a symmetric key, the immutable data;
• encrypting, using a public key, the symmetric key;
• storing the mutable data and the encrypted symmetric key in a cache storage, wherein the mutable data is to be executed by a smart contract;
• initiating a consensus algorithm to record the encrypted immutable data on a blockchain;
• in response to successfully performing the consensus algorithm, recording, based on invoking the smart contract, the encrypted immutable data on the blockchain, wherein the blockchain is stored in a database that has lower storage cost than the cache storage;
• linking, based on invoking the smart contract, the mutable data and the encrypted immutable data based on the index data, the linking comprising storing the index data and the mutable data under a first data structure in the cache storage and recording the index data and the immutable data under a second data structure on the blockchain;
• providing the index data and the encrypted symmetric key in response to receiving a query of the cache storage;
• and
• providing the encrypted immutable data, in response to receiving a query of the second data structure on the blockchain, the query comprising the index data, thereby allowing access to the data for storage on the blockchain.

A non-transitory computer readable storage medium storing instructions executable by one or more computers and that upon such execution cause the one or more computers to perform operations comprising:

• receiving data for storage from a service platform, wherein the data includes mutable data, immutable data, and index data identified by the service platform;
• encrypting, using a symmetric key, the immutable data;
• encrypting, using a public key, the symmetric key;
• storing the mutable data and the encrypted symmetric key in a cache storage,
• wherein the mutable data is to be executed by a smart contract;
• initiating a consensus algorithm to record the encrypted immutable data on a blockchain;
• in response to successfully performing the consensus algorithm, recording, based on invoking the smart contract, the encrypted immutable data on the blockchain, wherein the blockchain is stored in a database that has lower storage cost than the cache storage;
• linking, based on invoking the smart contract, the mutable data and the encrypted immutable data based on the index data, the linking comprising storing the index data and the mutable data under a first data structure in the cache storage and recording the index data and the immutable data under a second data structure on the blockchain;
• providing the index data and the encrypted symmetric key in response to receiving a query of the cache storage;
• and
• providing the encrypted immutable data, in response to receiving a query of the second data structure on the blockchain, the query comprising the index data, thereby allowing access to the data for storage on the blockchain.