All sources that have been conculted for this assignemt:
https://medium.com/@shyamshankar/centralized-ledgers-vs-distributed-ledgers-layman-understanding-52449264ae23
https://app.koios.world/#/worlds/blockchain/blockchain-level-1/bc-1-1-5-centralized-ledgers
https://www.ibm.com/topics/smart-contracts
https://www.youtube.com/watch?v=bHq1LO1Yzwk
https://app.koios.world/#/worlds/blockchain/blockchain-level-1/bc-1-6-1-introduction-to-smart-contracts
https://www.youtube.com/watch?v=qniz6h2fYuc
https://app.koios.world/#/worlds/blockchain/blockchain-level-2/bc-2-3-1-different-positions-in-the-field-1-2
