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README.md docs(blockchain): add blockchain branch subjects to public 2 years ago

README.md

Usable Token

Instructions

  • Create a Smart Contract named UsableToken
  • Like MinimalToken, its constructor takes as parameter an amount that is given initially to the deployer.
  • Create a function approve(address,uint) that allows the owner of the token to approve a spender to spend a certain amount of tokens.
  • Create a function allowance(address,uint) that returns the amount of tokens that a spender can spend on behalf of the owner.

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