Extension API provides the functions that the standard (ERC-721) APIs do not offer.

Get NFT Royalty Information

Gets the royalty and the address who receives this royalty via the token ID (tokenId) and the NFT sales (salePrice). The royalty can be set upon minting an NFT with the contract implemented ERC-2981/CW-2981 interface.

Request URL

Live URL	https://bc-api.qpyou.cn/core/v1/nft/extension/{contract}/royalty/{tokenId}
Sandbox URL	https://sandbox-bc-api.qpyou.cn/core/v1/nft/extension/{contract}/royalty/{tokenId}
HTTP Method	GET
Content-Type	application/json

Path Parameters

Field Name	Description	Type	Required
contract	the NFT contract address	string	Y
tokenId	NFT ID	String	Y

Header Parameters

Field Name	Description	Type	Required
Authorization	Authentication token required to call the API	string	Y
x-network	the blockchain networks {ploygon, xpla}	string	Y

Query Parameters

Field Name	Description	Type	Required
salePrice	the amount of NFT sale	string	Y

Responses

Field Name	Description	Type
code	api request result code, 0: success	number
message	the result message	String
data	API response data	json
data.receiver	the wallet address that receives the royalty	string
data.amount	the royalty amount	string

Request Sample

curl -X 'GET' \
  'https://sandbox-bc-api.qpyou.cn/core/v1/nft/extension/0xA3F4308Ed655f962dD7CA180545c21718fAE49AD/royalty/1?salePrice=0.5' \
  -H 'accept: application/json' \
  -H 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImNvbS5jb...' \
  -H 'x-network: polygon'

curl -X 'GET' \

'https://sandbox-bc-api.qpyou.cn/core/v1/nft/extension/0xA3F4308Ed655f962dD7CA180545c21718fAE49AD/royalty/1?salePrice=0.5' \

-H 'accept: application/json' \

-H 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImNvbS5jb...' \

-H 'x-network: polygon'

Response Sample

{
  "code": 0,
  "message": "success",
  "data": {
    "receiver": "0xD6e69da7f1be111394dfef4C48eaC9b52ddf2Fd0",
    "amount": "0.0375"
  }
}

{

"code": 0,

"message": "success",

"data": {

"receiver": "0xD6e69da7f1be111394dfef4C48eaC9b52ddf2Fd0",

"amount": "0.0375"

}

Mint NFT

Creates a transaction that mint tokens to a specific address (to). You can call this API loading the required NFT information (mintMsg.tokenId, mintMsg.metadata, etc.) into an array, and this API will upload the NFT information to IPFS (InterPlanetary File System) and mint the NFT. This API extends the features of NFT API, able to mint maximum 200 tokens at the same time and to set royalty. from must be the account that has a right to mint.

Request URL

Live URL	https://bc-api.qpyou.cn/core/v1/nft/extension/{contract}/mint
Sandbox URL	https://sandbox-bc-api.qpyou.cn/core/v1/nft/extension/{contract}/mint
HTTP Method	POST
Content-Type	application/json

Path Parameters

Field Name	Description	Type	Required
contract	the NFT contract address	string	Y

Header Parameters

Field Name	Description	Type	Required
Authorization	Authentication token required to call the API	string	Y
x-network	the blockchain networks {ploygon, xpla}	string	Y

Request Body

Field Name	Description	Type	Required
from	the account address that mints NFTs	string	Y
mintMsg	This is the required information for minting. It is in JSON array format, so you can mint NFTs to multiple accounts.	array	Y
mintMsg.to	the wallet address that receives NFTs	string	Y
mintMsg.tokenId	This is the NFT ID. The NFT ID should be unique, and is defined by the NFT minter. Polygon: Only strings and integers (0~2²⁵⁶-1) are allowed. XPLA: Only strings are allowed.	string	Y
mintMsg.royaltyPercentage	This is the royalty percentage. It is the money given to the creator of an NFT or the claimant every time the NFT is sold or resold. The royalty rate is applied to the total amount of sale. This feature is supported for the NFT marketplaces that are willing to continuously fund artists and NFT creators. The marketplace checks the NFT royalty and pay it to the recipient. The royalty is not directly paid to the recipient when the NFT is sold (transferred). This feature is adopted for the OpenSea. Polygon: Allowed to the 2 decimal places. XPLA: Only an integer is allowed.	number	N
mintMsg.metadata	the metadata You need to check type and url (`animationUrl`, `youtubeUrl`, `externalUrl`) formats. If this data is incorrect, the API request may fail. The metadata will be saved in the snake case to be used for OpenSea when it is saved in IPFS (example: `animationUrl` → `animation_url`)	json	Y
mintMsg.metadata.name	the NFT name	string	Y
mintMsg.metadata.description	the NFT description	string	N
mintMsg.metadata.image	This is the NFT image address. This is the public website address or the public IPFS address for uploading images to IPFS.	string	Y
mintMsg.metadata.animationUrl	the address for the NFT animation	string	N
mintMsg.metadata.youtubeUrl	the Youtube address	string	N
mintMsg.metadata.imageData	the NFT image information	string	N
mintMsg.metadata.externalUrl	the external url	string	N
mintMsg.metadata.backgroundColor	the background color info of the token (OpenSea)	string	N
mintMsg.metadata.attributes	These are the information of the metadata attributes. These contain the additional info that are not described in the metadata.	json	N
mintMsg.metadata.attributes.traitType	The names of the items that constitute attributes	string	N
mintMsg.metadata.attributes.maxValue	the maximum value of trait	number	N
mintMsg.metadata.attributes.value	This is the trait value. It should be less than `mintMsg.metadata.attributes.maxValue`. If `mintMsg.metadata.attributes.displayType` is date, set this value following unix timestamp (seconds) format.	string or number	N
mintMsg.metadata.attributes.displayType	This is the display type of the trait. The default value is string. number: numeric type boost_percentage: percentage (OpenSea Boosts) boost_number: numeric (OpenSea Boosts) date: date type (example: Tuesday, January 1st, 2019)	string	N
encoded	whether the returned transaction is encoded or not `true`: Receive the encoded raw transaction string (`data.rawTx`). `false`: Receive the decoded `data.rawTx` (JSON).	boolean	N

Responses

Field Name	Description	Type
code	api request result code, 0: success	number
message	the result message	String
data	API response data	json
data.rawTx	the transaction data	string or json
data.hashedTx	This is hashed `data.rawTx`. This value is only returned when the API header `x-network` is “polygon” and the Request Body `from` is an multi sig wallet address.	string
data.requestId	the unique value that can identify each API request	string

Request Sample

curl -X 'POST' \
  'https://sandbox-bc-api.qpyou.cn/core/v1/nft/extension/0xA3F4308Ed655f962dD7CA180545c21718fAE49AD/mint' \
  -H 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImNvbS5jb...' \
  -H 'accept: application/json' \
  -H 'x-network: polygon' \
  -H 'Content-Type: application/json' \
  -d '{
  "from": "0x9428e6eF51FEb2201676deEc11B7E36F7c1F0765",
  "mintMsg": [
    {
      "to": "0xFBd488D1b00604d3b05124d80E35FeA9A39C3296",
      "tokenId": "101",
      "metadata": {
        "name": "Arbiter'\''s Robe",
        "description": "desc",
        "image": "https://image01.c2x.world/equip_92053030.gif",
        "animationUrl": "https://image01.c2x.world/equip_92053030.gif",
        "externalUrl": "https://dex.c2xnft.com/market?key=4423",
        "attributes": [
          {
            "traitType": "Category",
            "value": "Game",
          }
        ]
      },
      "royaltyPercentage": 12
    }
  ],
  "encoded": true
}'

curl -X 'POST' \

'https://sandbox-bc-api.qpyou.cn/core/v1/nft/extension/0xA3F4308Ed655f962dD7CA180545c21718fAE49AD/mint' \

-H 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImNvbS5jb...' \

-H 'accept: application/json' \

-H 'x-network: polygon' \

-H 'Content-Type: application/json' \

-d '{

"from": "0x9428e6eF51FEb2201676deEc11B7E36F7c1F0765",

"mintMsg": [

{

"to": "0xFBd488D1b00604d3b05124d80E35FeA9A39C3296",

"tokenId": "101",

"metadata": {

"name": "Arbiter'\''s Robe",

"description": "desc",

"image": "https://image01.c2x.world/equip_92053030.gif",

"animationUrl": "https://image01.c2x.world/equip_92053030.gif",

"externalUrl": "https://dex.c2xnft.com/market?key=4423",

"attributes": [

{

"traitType": "Category",

"value": "Game",

}

]

"royaltyPercentage": 12

}

"encoded": true

Response Sample

{
  "code": 0,
  "message": "success",
  "data": {
    "rawTx": "02f8f3830138810b8459682f008459682f1083023...",
    "hashedTx": "0x53e8783e4da707daf58c96a8cea278e7b2a8a5f185af0913b518974556c79076...",
    "requestId": "6fb62650-d52e-4bec-bb91-dd081813d7f1"
  }
}

{

"code": 0,

"message": "success",

"data": {

"rawTx": "02f8f3830138810b8459682f008459682f1083023...",

"hashedTx": "0x53e8783e4da707daf58c96a8cea278e7b2a8a5f185af0913b518974556c79076...",

"requestId": "6fb62650-d52e-4bec-bb91-dd081813d7f1"

}

Deploy NFT Contract

Creates a transaction that deploys the NFT contract. The deployed contract supports ERC-721/CW-721 standard and the extension features.

Bulk Minting
Royalty (ERC-2981/CW-2981)

Request URL

Live URL	https://bc-api.qpyou.cn/core/v1/nft/extension/contract
Sandbox URL	https://sandbox-bc-api.qpyou.cn/core/v1/nft/extension/contract
HTTP Method	POST
Content-Type	application/json

Header Parameters

Field Name	Description	Type	Required
Authorization	Authentication token required to call the API	string	Y
x-network	the blockchain networks {ploygon, xpla}	string	Y

Request Body

Field Name	Description	Type	Required
from	the wallet address that deploys the contract	string	Y
name	the NFT contract name	string	Y
symbol	the NFT contract symbol	string	Y
minter	the wallet address of the account who can mint an NFT at this NFT contract	string	Y
encoded	whether the returned transaction is encoded or not `true`: Receive the encoded raw transaction string (`data.rawTx`). `false`: Receive the decoded `data.rawTx` (JSON).	boolean	N

Responses

Field Name	Description	Type
code	api request result code, 0: success	number
message	the result message	String
data	API response data	json
data.rawTx	the transaction data	string or json
data.hashedTx	This is hashed `data.rawTx`. This value is only returned when the API header `x-network` is “polygon” and the Request Body `from` is an multi sig wallet address.	string
data.requestId	the unique value that can identify each API request	string

Request Sample

curl -X 'POST' \
  'https://sandbox-bc-api.qpyou.cn/core/v1/nft/extension/contract' \
  -H 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImNvbS5jb...' \
  -H 'accept: application/json' \
  -H 'x-network: polygon' \
  -H 'Content-Type: application/json' \
  -d '{
  "encoded": true,
  "from": "0x9428e6eF51FEb2201676deEc11B7E36F7c1F0765",
  "name": "Extension NFT",
  "symbol": "ENFT",
  "minter": "0x9428e6eF51FEb2201676deEc11B7E36F7c1F0765"
}'

curl -X 'POST' \

'https://sandbox-bc-api.qpyou.cn/core/v1/nft/extension/contract' \

-H 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImNvbS5jb...' \

-H 'accept: application/json' \

-H 'x-network: polygon' \

-H 'Content-Type: application/json' \

-d '{

"encoded": true,

"from": "0x9428e6eF51FEb2201676deEc11B7E36F7c1F0765",

"name": "Extension NFT",

"symbol": "ENFT",

"minter": "0x9428e6eF51FEb2201676deEc11B7E36F7c1F0765"

Response Sample

{
  "code": 0,
  "message": "success",
  "data": {
    rawTx: "02f8f3830138810b8459682f008459682f108302...",
    "hashedTx": "0x53e8783e4da707daf58c96a8cea278e7b2a8a5f185af0913b518974556c79076...",
    "requestId": "6fu656d0-t52q-2bdc-ba93-dd063815s7e1"
  }
}

{

"code": 0,

"message": "success",

"data": {

rawTx: "02f8f3830138810b8459682f008459682f108302...",

"hashedTx": "0x53e8783e4da707daf58c96a8cea278e7b2a8a5f185af0913b518974556c79076...",

"requestId": "6fu656d0-t52q-2bdc-ba93-dd063815s7e1"

}

Get NFT Royalty Information

Request URL

Path Parameters

Header Parameters

Query Parameters

Responses

Request Sample

Response Sample

Mint NFT

Request URL

Path Parameters

Header Parameters

Request Body

Responses

Request Sample

Response Sample

Deploy NFT Contract

Request URL

Header Parameters

Request Body

Responses

Request Sample

Response Sample

Getting Started

Console Guide

Download

API Document

Support