Advanced New Technologies Co., Ltd.

Alibaba Group Holding Limited

Alipay (hangzhou) Information Technology Co., Ltd.

Wenlong Yang

Rubing Shi

Ping Dai

Jincheng Wang

Shubo Li

Yujun Peng

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for digital asset management. One of the methods includes: obtaining a request for creating a digital asset corresponding to a tangible asset, wherein the request comprises one or more characteristics of the digital asset; generating a blockchain contract corresponding to the tangible asset based on the one or more characteristics of the digital asset; and deploying the generated blockchain contract on a blockchain, wherein the deployed blockchain contract is executable to issue the digital asset corresponding to the tangible asset.

System and method for digital asset management

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for digital asset buyback. One of the methods includes: obtaining a request for buying back a digital asset from a first blockchain account, the request comprising a quantity of the digital asset; identifying, based on the request, a blockchain contract that is deployed on the blockchain and that corresponds to the digital asset; generating a blockchain transaction for transferring the quantity of the digital asset from the first blockchain account to a second blockchain account associated with digital asset buyback, wherein the blockchain contract comprises a restriction prohibiting transfer of the digital asset out of the second blockchain account; and sending, to a blockchain node for adding to the blockchain, the blockchain transaction for transferring the quantity of the digital asset from the first blockchain account to the second blockchain account.

System and method for digital asset transfer

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for blockchain-based consensus management, are provided. One of the methods includes: obtaining a request for creating a consensus template, wherein the request comprises information about a plurality of participating entities associated with the consensus template; generating, based on the request, a dataset representing a hierarchical structure of the participating entities associated with the consensus template; creating a blockchain transaction for registering the consensus template to a blockchain, wherein the blockchain transaction comprises the dataset representing the hierarchical structure of the participating entities; and sending, to one or more blockchain nodes associated with the blockchain for adding to the blockchain, the blockchain transaction for registering the consensus template to the blockchain.

System and method for consensus management

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for blockchain transaction processing. One of the methods includes: obtaining, by a blockchain node, a current blockchain transaction generated based on performing a service; obtaining, by the blockchain node based on executing a smart contract, a transaction identifier of a previous blockchain transaction; recording, by the blockchain node, the transaction identifier into a transaction log so that a previous blockchain transaction is identifiable from the transaction log based on the transaction identifier, wherein the transaction log stores blockchain transactions of the current block; and recording the blockchain transaction of the current block and the transaction log into the blockchain.

Blockchain transaction processing method and apparatus

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for processing blockchain transactions. One of the methods includes: obtaining, by a blockchain node of a consortium blockchain network, a blockchain transaction associated with a service; invoking a smart contract corresponding to the service; determining presentation information based on the smart contract and the service, wherein the presentation information is presented to a user through a client device in response to receiving a query from the client device; recording the presentation information into a blockchain transaction log based on the smart contract; and recording the blockchain transaction and the blockchain transaction log of the blockchain transaction into a blockchain.

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for controlling restrictions on digital asset. One of the methods includes: detecting a triggering event for derestricting a quantity of a digital asset associated with a tangible asset, wherein the tangible asset corresponds to a blockchain contract deployed on a blockchain; generating a blockchain transaction for transferring the quantity of the digital asset from a restricted blockchain account associated with the blockchain to an unrestricted blockchain account associated with the blockchain, wherein the blockchain transaction invokes the blockchain contract corresponding to the tangible asset; and sending the blockchain transaction to a blockchain node for adding to the blockchain.

System and method for controlling restrictions on digital asset

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for digital asset transfer. One of the methods includes: obtaining a request for transferring a quantity of a digital asset from a first blockchain account associated with a blockchain to a second blockchain account associated with the blockchain, wherein the request identifies a tangible asset corresponding to the digital asset; determining a blockchain contract that is deployed on the blockchain and that corresponds to the tangible asset identified in the request; generating, based on the obtained request, a blockchain transaction for transferring the quantity of the digital asset from the first blockchain account to the second blockchain account, wherein the blockchain transaction invokes the determined blockchain contract; and sending the generated blockchain transaction to a blockchain node for adding to the blockchain.

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Hangzhou, China

Wenlong Yang