Paras Documentation v2
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Overview
Contract
Getting Started
Using near-api-js
NFT contract function calls
Marketplace contract function calls
NFT smart contract integration
NFT Metadata
Reference
API Reference
Examples
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Getting Started

You will need authentication to Paras if you want to:
  1. 1.
    Create a publication
  2. 2.
    Edit collection
  3. 3.
    Create collections
  4. 4.
    Edit collections
  5. 5.
    Upload files
All direct function call to the smart contract would authentication with the near blockchain. To generate auth token please look at the following script,
const nearAPI = require('near-api-js')
const { Base64 } = require('js-base64')
​
const authToken = async (accountId, signer, networkId) => {
try {
const arr = new Array(accountId)
for (var i = 0; i < accountId.length; i++) {
arr[i] = accountId.charCodeAt(i)
}
const msgBuf = new Uint8Array(arr)
const signedMsg = await signer.signMessage(
msgBuf,
accountId,
networkId
)
const pubKey = Buffer.from(signedMsg.publicKey.data).toString('hex')
const signature = Buffer.from(signedMsg.signature).toString('hex')
const payload = [accountId, pubKey, signature]
return Base64.encode(payload.join('&'))
} catch (err) {
console.log(err)
return null
}
}
​
const main = async () => {
const config = {
networkId: 'testnet',
nodeUrl: 'https://rpc.testnet.near.org',
walletUrl: 'https://wallet.testnet.near.org',
appName: 'Paras Testnet',
contractName: `paras-token-v2.testnet`
}
​
try {
// Initializing nearAPI
// Login and init contract
const keyStore = new nearAPI.keyStores.UnencryptedFileSystemKeyStore(
`${process.env.HOME}/.near-credentials/`
)
​
const signer = new nearAPI.InMemorySigner(keyStore)
​
const connection = await nearAPI.connect({
deps: {
keyStore: keyStore,
},
...config,
})
​
const account_id = 'orang.testnet'
const account = await connection.account(account_id)
const authorizationHeader = await authToken(account_id, signer, config.networkId)
​
console.log(`Authorization Header : ${authorizationHeader}`)
} catch (err) {
throw err
}
}
​
main()

We have two main smart contracts,
  1. 1.
    NFT contract (x.paras.near) -- serves all the NFT created on Paras. this is where NFT will be minted from the creator
  2. 2.
    Marketplace (marketplace.paras.near) -- secondary market, this is where buy and sale single NFT happens
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