Blockchain for Beginners 4
The following concepts and ideas are covered in this test: centralized apps, chain vs. blockchain, chaincode, hash function, Litecoin, Multi-signature, Oracles, Pragma tokenless ledger unspent transactions outputs
time left 4 : 00
__________ are third party services which are not part of the blockchain consensus mechanism.
The cryptographic link that keeps blocks together using a hash function is called a ______________.
In a _________________ system, control is exerted by just one entity, for example a person or an enterprise.
_________________ initializes and manages the ledger state through transactions submitted by applications.
________________________________ are used to determine whether a transaction is valid.
____________________ addresses allow multiple parties to require more than one key to authorize a transaction.
A distributed ledger that doesn't require a native currency to operate is called a ____________________.
_________________ defines which compiler version the smart contract uses.
_________________ is a peer-to-peer electronic cash system that transfers funds overseas at high speeds.
A _________________ is a function that maps data of an arbitrary size.
