CN113421094B - A blockchain-based method for implementing smart contracts for indivisible assets - Google Patents

Abstract

The invention provides a block chain-based indivisible asset intelligent contract implementation method, which comprises the following steps: based on the digital asset basic framework, the indivisible asset father intelligent contract is realized, so that the business logic of the core is realized, and the father intelligent contract is provided for a user in an open source mode; the user inherits the parent class intelligent contract through a new subclass and realizes related atomic operation of the inseparable asset through block chain deployment; the indivisible asset is a non-homogeneous digital asset. The invention defines an atomic operation scheme of a standard set of atomic operation schemes for the indivisible assets of the blockchain platform, accurately defines attribute information and atomic operation of each asset, reduces the cost of application development and docking for a blockchain application developer, enables the uplink application to be rapidly docked and deployed, greatly shortens the research and development period, and provides a unified standard for cooperation of data between applications.

Description

A blockchain-based method for implementing smart contracts for indivisible assets

technical field

The present invention relates to the field of block chain technology, in particular, to a block chain-based method for realizing an indivisible asset smart contract.

Background technique

Indivisible assets based on the blockchain are also called non-homogeneous assets. Non-homogeneity represents uniqueness. Taking encrypted cats as an example, each cat is endowed with genes and is unique (a cat is an NFT). Cats are not interchangeable. This uniqueness makes certain rare cats collectible and therefore highly sought after.

At present, there is no uniform standard for indivisible assets in the blockchain industry. Only the ERC721 specification can be referred to. At the same time, ERC721 is only developed based on Ethereum and does not have the ability to cross platforms. The corresponding interface has not been implemented yet. Developers implement the interface to complete the corresponding functions. If the issuers of each indivisible asset use their own standards to issue assets, it will be extremely costly for on-chain application developers and exchange docking costs, because application on-chain requires independent docking of each asset.

Contents of the invention

The present invention aims to provide a block chain-based method for implementing smart contracts for indivisible assets, so as to reduce the cost of docking application developers on the chain.

The present invention provides a blockchain-based method for implementing an indivisible asset smart contract, including:

Based on the basic framework of digital assets, realize the parent smart contract of indivisible assets, so as to realize the core business logic, and provide the parent smart contract to users through open source;

The user inherits the smart contract of the parent class by creating a new subclass, and deploys it through the blockchain to realize the relevant atomic operations of the indivisible assets; the indivisible assets are non-homogeneous digital assets.

The indivisible asset definition has the following attribute fields: asset name, asset symbol, asset number, asset source data, asset status, asset attribute, and asset owner; wherein, the asset attribute is a self-defined interface body created by the asset Defined by the user; the asset owner is a custom structure array, including the address of the asset owner and the asset share of the asset owner. The total share of all asset owners must be 100%.

The relevant atomic operations of the indivisible assets include asset creation, that is, the creation of the indivisible assets, including the following steps:

First, initialize asset information through the initialization interface init; wherein, the incoming parameters of the initialization interface init include asset names and asset symbols, and the initialization interface init returns blockchain transaction information;

Then, create an asset through the asset creation interface issue; the incoming parameters of the asset creation interface issue are the asset receiving address list, asset attributes, and asset source data, and the interface returns a globally unique asset number and error message.

The relevant atomic operations of the indivisible assets include asset transfer, that is, designing the asset transfer interface transfer to realize the transfer of assets; wherein, the incoming parameters of the asset transfer interface transfer are the user address of the asset payer, the user address of the asset receiver, and the asset number , asset share, and the signature of the initiator of the transaction; the asset transfer interface transfer returns the blockchain transaction information.

The relevant atomic operations of the indivisible assets include asset owner query, that is, designing the asset owner query interface ownerOf to query the owner of the corresponding asset; the incoming parameter of the asset owner query interface ownerOf is the asset number; the asset owner query interface ownerOf Returns a list of addresses of asset owners and their corresponding asset shares.

The relevant atomic operations of the indivisible assets include asset retrieval, that is, design an asset retrieval interface tokenOfOwnerByIndex to query all asset information of a specified user; the incoming parameters of the asset retrieval interface tokenOfOwnerByIndex include user asset addresses; the asset retrieval interface tokenOfOwnerByIndex returns an array of asset information.

The relevant atomic operations of the indivisible assets include asset information acquisition, that is, designing the asset information acquisition interface infoByID to query the detailed information of the asset; the incoming parameter of the asset information acquisition interface infoByID is the asset number, and the asset information acquisition interface infoByID returns the asset information structure .

The relevant atomic operations of the indivisible assets include obtaining the total amount of assets, that is, designing the interface totalSupply of the total amount of assets to obtain the total amount of assets on the current chain; the interface totalSupply of the total amount of assets returns the total amount of assets on the chain.

The relevant atomic operations of the indivisible assets include asset attribute, symbol, and name query, that is, designing an asset attribute, symbol, and name query interface; the asset attribute, symbol, and name query interface returns an array of asset numbers.

The relevant atomic operations of the indivisible assets include asset destruction, that is, the asset destruction interface destroy is designed to destroy the asset with the specified asset number; the incoming parameter of the asset destruction interface destroy is the asset number, and the asset destruction interface destroy returns the block chain transaction information;

The relevant atomic operations of the indivisible assets include asset attribute update, that is, the design of asset attribute update interface, including update attribute and source data interface, only update source data interface, and only update attribute interface; the asset attribute update interface returns the block chain Trading Information.

In summary, owing to adopting above-mentioned technical scheme, the beneficial effect of the present invention is:

The present invention defines a set of normative and standard atomic operation schemes for indivisible assets of the blockchain platform, and at the same time accurately defines the attribute information and atomic operations of each asset, reducing the application development and docking costs for blockchain application developers. Cost, on-chain applications can be quickly docked and deployed, greatly shortening the R&D cycle, and providing a unified standard for data collaboration between applications.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be viewed The scope is limited, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a blockchain-based indivisible asset smart contract implementation method according to an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example

The characteristics of non-homogeneous digital assets (XLNFT) are indivisible, irreplaceable, and unique, and the representative agreement framework is such as ERC721 of Ethereum. Can be applied to tangible assets such as art, agricultural products, cars, real estate, etc. As shown in Figure 1, this embodiment proposes a blockchain-based implementation method for an indivisible asset smart contract, including:

Based on the basic framework of digital assets, realize the parent smart contract of indivisible assets, so as to realize the core business logic, and provide the parent smart contract to users through open source;

The user inherits the smart contract of the parent class by creating a new subclass, and deploys it through the blockchain to realize the relevant atomic operations of the indivisible assets; the indivisible assets are non-homogeneous digital assets.

Define the following attribute fields for the indivisible asset: asset name, asset symbol, asset number, asset source data, asset status (normal, frozen, destroyed), asset attribute, and asset owner; wherein, the asset attribute is a custom The interface body is defined by the asset creation user; the asset owner is a custom structure array, including the address of the asset owner and the asset share of the asset owner. The total share of all asset owners must be 100%.

The relevant atomic operations of the indivisible assets include:

(1) Asset Creation

The relevant atomic operations of the indivisible assets include asset creation, that is, the creation of the indivisible assets, including the following steps:

First, initialize asset information through the initialization interface init; wherein, the incoming parameters of the initialization interface init include asset names and asset symbols, and the initialization interface init returns blockchain transaction information;

In this embodiment, the initialization interface init is:

init(name string, symbol string) pb. Response;

Among them, the parameter name indicates the asset name; symbol indicates the asset symbol;

Then, create an asset through the asset creation interface issue; where, the incoming parameters of the asset creation interface issue are asset receiving address, asset attribute, asset source data (usually URL), and the interface returns a globally unique asset number and error information (such as empty if none).

In this embodiment, the asset creation interface issue is:

issue(to[]addressAndshare, attribute struct, metaData string)(uint, error);

or,

issue(to[]addressAndshare, attribute struct)(uint, error);

Among them, the parameter []address indicates the asset receiving address list; attribute indicates the asset attribute; metaData indicates the original data of the asset; uint indicates the asset number; error indicates the error message.

(2) Asset transfer

The relevant atomic operations of the indivisible assets include asset transfer, that is, designing the asset transfer interface transfer to realize the transfer of assets; wherein, the incoming parameters of the asset transfer interface transfer are the user address of the asset payer, the user address of the asset receiver, and the asset number , asset share, and the signature of the initiator of the transaction; the asset transfer interface transfer returns the blockchain transaction information.

In this embodiment, the asset transfer interface transfer is:

transfer(owner address,to address,ID uint,share float,sign string)pb.Response.

Among them, the parameter owner address indicates the address of the asset payer; to address indicates the address of the asset receiver; ID uint indicates the asset number; share float indicates the transaction share; sign indicates the signature of the transaction initiator.

(3) Asset owner inquiry

The relevant atomic operations of the indivisible assets include asset owner query, that is, designing the asset owner query interface ownerOf to query the owner of the corresponding asset; the incoming parameter of the asset owner query interface ownerOf is the asset number; the asset owner query interface ownerOf Returns a list of addresses of asset owners and their corresponding asset shares.

In this embodiment, the asset owner query interface ownerOf is:

ownerOf(ID uint)([]address, error);

Among them, the parameter ID uint indicates the asset number; []address indicates the address list of the asset holder.

(4) Asset retrieval

The relevant atomic operations of the indivisible assets include asset retrieval, that is, design an asset retrieval interface tokenOfOwnerByIndex to query all asset information of a specified user; the incoming parameters of the asset retrieval interface tokenOfOwnerByIndex include user asset addresses; the asset retrieval interface tokenOfOwnerByIndex returns an array of asset information.

In the embodiment of this city, the asset retrieval interface tokenOfOwnerByIndex is:

tokenOfOwnerByIndex(user address)([]struct, error);

Among them, the parameter user address represents the user asset address; []struct represents the asset information array, and the asset information data is defined as follows:

type token struct{

ID uint

Share float

}

(5) Acquisition of asset information

The relevant atomic operations of the indivisible assets include asset information acquisition, that is, designing the asset information acquisition interface infoByID to query the detailed information of the asset; the incoming parameter of the asset information acquisition interface infoByID is the asset number, and the asset information acquisition interface infoByID returns the asset information structure .

In this embodiment, the asset information acquisition interface infoByID is:

infoByID(ID uint)(struct, error);

Among them, the parameter ID uint represents the asset number; struct represents the asset information structure, which is defined as follows:

type info struct{

Name string

Symbol string

metaData string

Attribute struct

}

(6) Acquisition of total assets

The relevant atomic operations of the indivisible assets include obtaining the total amount of assets, that is, designing the interface totalSupply of the total amount of assets to obtain the total amount of assets on the current chain; the interface totalSupply of the total amount of assets returns the total amount of assets on the chain.

In this embodiment, the interface totalSupply of the total amount of assets is:

totalSupply()(uint, error);

Among them, uint represents the total amount of assets.

(7) Asset attribute, symbol, name query

The relevant atomic operations of the indivisible assets include asset attribute, symbol, and name query, that is, designing an asset attribute, symbol, and name query interface; the asset attribute, symbol, and name query interface returns an array of asset numbers.

In this embodiment, the asset attribute, symbol, name query interface is:

queryInfoByAttribute(attribute struct)([]uint, error), that is, asset attribute query;

queryInfoBySymbol(symbol string)([]uint, error), that is, asset symbol query;

queryInfoByName(name string)([]uint, error), namely asset name query.

Among them, the parameter attribute indicates the asset attribute; symbol indicates the asset symbol; name indicates the asset name.

(8) Destruction of assets

The atomic operations related to the indivisible assets include asset destruction, that is, the asset destruction interface destroy is designed to destroy the asset with the specified asset number; the input parameter of the asset destruction interface destroy is the asset number, and the asset destruction interface destroy returns the blockchain transaction information.

In this embodiment, the asset destruction interface destroy is:

destroy(ID uint) pb. Response;

Among them, the parameter ID uint represents the asset number.

(9) Asset attribute update

The relevant atomic operations of the indivisible assets include asset attribute update, that is, the design of asset attribute update interface, including update attribute and source data interface, only update source data interface, and only update attribute interface; the asset attribute update interface returns the block chain Trading Information.

In this embodiment, the asset attribute update interface is:

update(ID uint, attribute struct, metaData string) pb.Response, that is, to update the interface between the attribute and the source data;

update(ID uint, metaData string)pb.Response, that is, only update the source data interface;

update(ID uint, attribute struct)pb.Response, which only updates the attribute interface.

Among them, the parameter ID uint indicates the asset number; attribute indicates the asset attribute; metaData indicates the asset source data.

From the above content, it can be seen that the present invention defines a set of standardized atomic operation schemes for indivisible assets of the blockchain platform, and at the same time accurately defines the attribute information and atomic operations of each asset, which reduces the time for blockchain application developers. The cost of application development and docking, on-chain applications can be quickly docked and deployed, greatly shortening the research and development cycle, and providing a unified standard for data collaboration between applications.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (1)

1. A blockchain-based method for implementing an indivisible asset smart contract, characterized in that it includes: Based on the basic framework of digital assets, realize the parent smart contract of indivisible assets, so as to realize the core business logic, and provide the parent smart contract to users through open source; The user inherits the smart contract of the parent class by creating a new subclass, and deploys it through the blockchain to realize the relevant atomic operations of the indivisible assets; the indivisible assets are non-homogeneous digital assets; The indivisible asset definition has the following attribute fields: asset name, asset symbol, asset number, asset source data, asset status, asset attribute, and asset owner; wherein, the asset attribute is a self-defined interface body created by the asset Defined by the user; the asset owner is a custom structure array, including the address of the asset owner and the asset share of the asset owner. The total share of all asset owners must be 100%; The relevant atomic operations of the indivisible assets include asset creation, that is, the creation of the indivisible assets, including the following steps: First, initialize asset information through the initialization interface init; wherein, the incoming parameters of the initialization interface init include asset names and asset symbols, and the initialization interface init returns blockchain transaction information; Then, create an asset through the asset creation interface issue; where, the incoming parameters of the asset creation interface issue are the asset receiving address list, asset attributes, and asset source data, and the interface returns a globally unique asset number and error message; The relevant atomic operations of the indivisible assets include asset transfer, that is, designing the asset transfer interface transfer to realize the transfer of assets; wherein, the incoming parameters of the asset transfer interface transfer are the user address of the asset payer, the user address of the asset receiver, and the asset number , asset share, and the signature of the initiator of the transaction; the asset transfer interface transfer returns the blockchain transaction information; The relevant atomic operations of the indivisible assets include asset owner query, that is, designing the asset owner query interface ownerOf to query the owner of the corresponding asset; the incoming parameter of the asset owner query interface ownerOf is the asset number; the asset owner query interface ownerOf The address list of the returned asset owner and the corresponding asset share; The relevant atomic operations of the indivisible assets include asset retrieval, that is, design an asset retrieval interface tokenOfOwnerByIndex to query all asset information of a specified user; the incoming parameters of the asset retrieval interface tokenOfOwnerByIndex include user asset addresses; the asset retrieval interface tokenOfOwnerByIndex returns an array of asset information; The relevant atomic operations of the indivisible assets include asset information acquisition, that is, designing the asset information acquisition interface infoByID to query the detailed information of the asset; the incoming parameter of the asset information acquisition interface infoByID is the asset number, and the asset information acquisition interface infoByID returns the asset information structure ; The relevant atomic operations of the indivisible assets include obtaining the total amount of assets, that is, designing the total amount of assets interface totalSupply to obtain the current total amount of assets on the chain; the total amount of assets interface totalSupply returns the total amount of assets on the chain; The relevant atomic operations of the indivisible assets include asset attribute, symbol, and name query, that is, designing an asset attribute, symbol, and name query interface; the asset attribute, symbol, and name query interface returns an array of asset numbers; The relevant atomic operations of the indivisible assets include asset destruction, that is, the asset destruction interface destroy is designed to destroy the asset with the specified asset number; the incoming parameter of the asset destruction interface destroy is the asset number, and the asset destruction interface destroy returns the block chain transaction information; The relevant atomic operations of the indivisible assets include asset attribute update, that is, the design of asset attribute update interface, including update attribute and source data interface, only update source data interface, and only update attribute interface; the asset attribute update interface returns the block chain Trading Information.

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