Level: medium
Author: darkstar
An unknown person placed a secret note about Hacky Easter 2019 in the Steem blockchain. It happend during Easter 2018.
To solve this challenge I first went to the steemit profile of the challenge author, darkstar. From there I went to his wallet and searched for transactions that included the text "Hacky Easter". I quickly found a transaction with a hidden note:
Transfer 0.001 SBD to ctf | Hacky Easter 2019 takes place between April and May 2019. Take a note: nomoneynobunny