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Patrick Collins
  • Member for 2 years, 7 months
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19 votes
Accepted

What is a blockchain oracle?

13 votes
Accepted

How do I get the implementation contract address from the proxy contract address?

12 votes
Accepted

eth-brownie: Unable to expand environment variable in host setting

11 votes
Accepted

Is it secure to read USD / ETH rate from exchanges directly without using price oracles?

11 votes
Accepted

Is Chainlink's price reference data free to consume?

8 votes

i want get random number between 100-999, as follows

8 votes
Accepted

How often are Chainlink price feeds updated?

7 votes
Accepted

How to get chainId / network name / network id etc in hardhat?

6 votes
Accepted

Does anyone know how to fork a chain at a particular block on Brownie?

6 votes

How can I securely generate a random number in my smart contract?

6 votes

What is the Oracle Problem definition exactly and briefly?

6 votes
Accepted

Does Chainlink store Oracle response for a transaction somewhere on blockchain?

6 votes
Accepted

Implementing Chainlink Data in Truffle / Hardhat

6 votes

Flash loan security considerations and attacks

6 votes
Accepted

What is the cost of using a Chainlink Oracle?

5 votes

Why do I need decentralized oracles?

5 votes
Accepted

How to get all the historical data from chainlink price feeds?

5 votes
Accepted

Property 'revertedWith' does not exist on type 'Assertion'

5 votes
Accepted

hardhat-deploy deterministic deployment

5 votes
Accepted

What is the purpose of using a true random number for an NFT?

5 votes
Accepted

hardhat-deploy: ProviderError: The method evm_snapshot does not exist/is not available

4 votes
Accepted

How can I make an ERC721 NFT such that the token owner can edit an attribute in the metadata? Where can they edit the metadata?

4 votes
Accepted

Brownie cannot locate deploy.py script

4 votes

How to use contracts from project dependencies in Brownie scripts?

4 votes
Accepted

directory is not empty: brownie

4 votes

Is there a way to get the *current* price of ETH in solidity function?

4 votes
Accepted

How do I withdraw Ether from my Chainlink node

4 votes
Accepted

Do all Chainlink feeds return prices with 8 decimals of precision?

3 votes
Accepted

How to get the return value of a transaction instead of the transaction receipt in brownie

3 votes
Accepted

Does Chainlink decimal change over time?

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