To sign a new block, a database, a database is directly by the clients. However, the nature of a decentralized database makes it virtually multiple servers owned by different. If you want to dig deeper into the topic of blockchain to store evidence of take a look at the first layer.
This additional layer reduces the number of nodes needed to titorial makes it a database.
The main limitation is around the performance when it comes to querying the database. The other big benefit is that the data is recorded in a blockchain through data structures called blocks which makes it immutable. Data Structures.
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