Advanced New Technologies Co., Ltd.

Alipay (hangzhou) Information Technology Co., Ltd.

Alibaba Group Holding Limited

Alipay Information Technology Co., Ltd.

Antchain Technology Pte. Ltd.

Haizhen Zhuo

Zhonghao Lu

Benquan Yu

Honglin Qiu

Faqiang Wang

A computer-implemented method, medium, and system are disclosed. In one computer-implemented method, an invocation request sent by an initiator is received by a blockchain node in a blockchain network. The invocation request is associated with invocation of a smart contract in the blockchain network. The smart contract includes contract code, data, and pre-update metadata. A pre-update data structure described by the pre-update metadata is parsed by the blockchain node and by execution of the contract code. The pre-update data structure is associated with the data comprised in the smart contract. Following parsing of the pre-update data structure, the pre-update data structure is represented by the blockchain node using a computer programming language. The pre-update data structure specified by the computer programming language is sent by the blockchain node to the initiator.

Methods and apparatuses for reading and updating data structures, and electronic devices

Methods, system, and apparatus, including computer programs encoded on computer storage media for data processing are provided. One of the methods includes: establishing a logic contract of a blockchain and one or more data contracts corresponding to the logic contract; deploying the logic contract and the one or more data contracts in the blockchain; storing data of a target block in the blockchain into the one or more data contracts; computing a hash value of each of the one or more data contracts; and determining a hash value of the target block in the blockchain based on the hash value of each of the one or more data contracts.

Data processing method and apparatus

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for blockchain data storage. One of the methods includes receiving a transaction associated with a blockchain network; determining, after the transaction is performed, an updated account state of a blockchain account involved in the transaction; adding, to a history state object database and after a current block is appended to a blockchain associated with the blockchain network based on performing a consensus algorithm, the updated account state, a hash value of the updated account state, an account identifier (ID) of the blockchain account, and a block ID of the current block; and updating, based on the hash value of the account state, the account ID, and the block ID, a state tree stored in a history state database.

Distributed blockchain data storage under account model

Disclosed herein are methods, systems, and non-transitory, computer-readable medium for blockchain data storage. One of the methods includes identifying an account identifier (ID) of a blockchain account involved in the transaction, wherein the transaction is included in a current block to be appended to a blockchain associated with the blockchain network based on performing a consensus algorithm; updating an account state corresponding to the account ID of the blockchain account to an updated account state based on the blockchain transaction after the current block is appended to the blockchain; hashing the updated account state to generate a hash value of the updated account state; identifying the hash value of the account state corresponding to the blockchain account based on the account ID of the blockchain account; and updating, in the current state database, the hash value of the account state to the hash value of the updated account state.

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for communicating and sharing blockchain data. One of the methods includes sending current state information associated with a current block of a blockchain to one or more shared storage nodes of the blockchain network; sending a hash value to the one of the one or more shared storage nodes for retrieving an account state stored in the historic state tree; receiving the account state in response to sending the hash value; and verifying, by the consensus node, that the account state is part of the blockchain based on the hash value.

Shared blockchain data storage

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for blockchain-based hierarchical data storage. One of the methods includes: determining, based on a blockchain stored in a database that includes multiple levels of storage, a block number interval that includes one or more block numbers associated with data nodes to be migrated to a lower level of storage in response to the data nodes meeting a data migration condition, wherein each of the data nodes is included in a state Merkle tree and is associated with a block number of a block of the blockchain where the corresponding data node was last updated, and the lower level of storage corresponds to a storage media with lower storage cost.

Blockchain-based hierarchical data storage

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for storing blockchain data. One of the methods includes receiving a plurality of blocks from a blockchain node in the blockchain network; for each of the plurality of blocks: determining a first number of blockchain nodes that store a dataset divided from an error correction coding (ECC) encoded version of the block and a second number of blockchain nodes that store a dataset comprised of redundant bits divided from the ECC encoded version of the block; calculating a priority value of the block based on the first number and the second number; and encoding at least a portion of the plurality of blocks using ECC to generate a plurality of encoded blocks based on the priority value.

Prioritizing shared blockchain data storage

Methods, systems, and devices, including computer programs encoded on computer storage media, for data processing are provided. One of the methods includes: receiving a query parameter; obtaining query result data from each of one or more predetermined data sources according to the query parameter; converting the query result data into target reliable data conforming to a predetermined data reliability protocol; and sending the target reliable data to a blockchain node.

Data processing method, apparatus, and device

Disclosed herein are computer-implemented methods, computer-implemented systems, and non-transitory, computer-readable media, to index blockchain data for storage. One computer-implemented method includes generating one or more encoded blocks by executing error correction coding (ECC) on one or more blocks of a blockchain. Each of the one or more encoded blocks are divided into a plurality of datasets. An index is provided for the one or more encoded blocks, where the index is used to index each dataset of the plurality of datasets to a blockchain node at which a respective dataset is stored.

Indexing and recovering encoded blockchain data

A computer-implemented method for storing blockchain data includes: obtaining, by a blockchain node, a first key-value pair corresponding to data to be stored, in which the first key-value pair includes a value of the data to be stored and a first key of the data to be stored; identifying, based on the first key, a corresponding leaf node in a tree data organization structure; and modifying, by the blockchain node, the first key, to update the first key-value pair to obtain an updated key-value pair including the value of the data to be stored and the modified first key, and storing the updated key-value pair into a conflict data storage structure corresponding to the identified leaf node.

Data storage on tree nodes

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for blockchain-based hierarchical data storage. One of the methods includes determining, based on a blockchain stored in a database that includes multiple levels of storage, a level of storage of the multiple levels of storage that meets a data migration condition as a target level of storage, wherein state data of the blockchain are stored as state Merkle trees in data worksheets of the multiple levels of storage, generating, for the target level of storage, an empty data worksheet in response to determining that the target level of storage meets the data migration condition, and storing at least a portion of a state Merkle tree corresponding to a newly created block of the blockchain to the empty data worksheet.

Blockchain based hierarchical data storage

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for storing blockchain data. One of the methods includes determining block data and current state data associated with a current block of a blockchain; sending the current state data to one or more shared storage nodes of a blockchain network; performing error correction coding of the block data to generate encoded block data; dividing, based on one or more predetermined rules, the encoded block data into a plurality of data sets; storing, based on the one or more predetermined rules, one or more data sets of the plurality of data sets; hashing each data set of remaining data sets of the plurality of data sets to generate one or more hash values corresponding to the remaining data sets; and storing the one or more hash values and the current state data.

Blockchain data storage based on shared nodes and error correction code

A method includes sending, by a consensus node of a blockchain network, current state information and one or more transactions associated with a current block of a blockchain to one or more shared storage nodes of the blockchain network, wherein the consensus node stores block header associated with every block of the blockchain and the current state information, the one or more shared storage nodes store block body and historic state information associated with every block of the blockchain, and wherein the historic state information is stored as key-value pairs (KVPs) of a historic state tree with values being account states of accounts associated with the blockchain network and keys being hash values of the corresponding account states; verifying that the one or more transactions are stored by the one or more shared storage nodes; and receiving a notification of a transaction associated with the consensus node.

Disclosed herein are methods, devices, and apparatuses, including computer programs stored on computer-readable media, for data traversal. One of the methods includes: obtaining one or more key-value pairs from a program for use on a blockchain; indexing one or more keys of the one or more key-value pairs to generate an index, the index associating the one or more keys with an identifier of the program; and retrieving at least one value in the one or more key-value pairs based on the index.

Methods and devices for data traversal

Disclosed herein are methods, systems and apparatus, including computer programs encoded on computer storage media, for storing blockchain data. One of the methods includes receiving transactions issued by a client node communicably coupled to a permissioned blockchain network, sending the transactions to a plurality of validating nodes for validating the transactions and running consensus, receiving one or more blocks generated based on consensus of at least a portion of the transactions by the plurality of validating nodes, encoding the one or more blocks using ECC to generate one or more encoded blocks, and for each encoded block of the one or more encoded blocks: dividing the encoded block into a plurality of datasets based on a data storage scheme associated with the one or more blocks.

Growing community of inventors

Hangzhou, China

Haizhen Zhuo