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Login with NEARSeed phrase and key derivation There are two separate things we’ll want to do: Create a random seed phrase for the user when they visit the crossword puzzle. This will be used if they win and don’t have a NEAR account and wish to create one. They can then paste this seed phrase …
Implementing the seed phrase logic from the necessary libraries Read More »
Login with NEARReplacing our solution hash So far in this tutorial, the user sends the plaintext solution to the crossword puzzle smart contract, where it’s hashed and compared with the known answer. This works, but we might want to be more careful and avoid sending the plaintext solution. Why? Blockchains rely on many computers processing …
Login with NEARAdd the login functionality Plan We’re going to add a login button that uses near-api-js to login with NEAR. Below is the workflow of logging in: User clicks the login button near-api-js creates a private key in the browser A redirect to NEAR Wallet occurs, passing the public key. NEAR Wallet (often) has …
Login with NEARIntermediate concepts This chapter will go a bit faster than the previous ones. We’re going to be covering an important part of smart contract development: cross-contract calls. Cross-contract calls A cross-contract call is when a smart contract calls another smart contract. For instance, if alice.near calls contract A, and contract A makes a …
Intermediate concepts (cross-contract calls and more) Read More »
Login with NEARLogging in with NEAR Previously… In the previous chapter we simply displayed whether the crossword puzzle was solved or not, by checking the solution hash against the user’s answers. Updates to transfer prize money In this chapter, our smart contract will send 5 Ⓝ to the first person who solves the puzzle. For …
Login with NEARAdding a puzzle We’re going to make a new puzzle, which means we need to provide the smart contract with a set of clues and info about the answers. Of course, we’ll not be sending the answers to the smart contract, otherwise everyone could see. We will, however, send details about each clue, …
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