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This is my solution. If you think you can further optimize it - be my guest!

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orenyomtov/doves-in-the-wind-ctf-solution

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White Noise CTF Solution

This is the second solution, to see the first solution, check out the first-solution tag

1. Generate vanity addresses

cargo install styleth
styleth --regex "ffff$"

2. Find a suitable block-address duo

Put the generated addresses in addresses.json and run:

node look_for_zero.js

If no suitable address was found, go back to Step #1.

Once you've found a suitable address:

  1. Enter its private key in hardhat.config.ts
  2. Enter its block number in scripts/deploy.ts and test/Test.ts
  3. Enter its public key in generate.js
  4. Enter its odd numbers' sum in scripts/deploy.ts

4. Deploy solution contract

npx hardhat run scripts/deploy.ts --network optimism

Enter the deployed contract's address in test/Test.ts

5. Generate puzzle solution

node generate.js

Once you have it, enter the puzzle solution in test/Test.ts

6. Test and deploy

# for testing on a local hardhat forked node, uncomment the relevant code block in test/Test.ts and run
npx hardhat test

# for waiting for the target block number and the transmitting the TXs:
npx hardhat test --network optimism

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This is my solution. If you think you can further optimize it - be my guest!

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