# Why use a blockchain?

By [Christopher Celaya](https://paragraph.com/@christophercelaya) · 2022-09-20

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Why use a blockchain?
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A blockchain is difficult to corrupt
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1.  Every node connected has a copy of the same data.
    
2.  This data is transparent.
    
3.  Nodes are responsible for validating transactions. (making sure nobody adds an extra zero to their account).
    
4.  When nodes validate a transaction, they publicly announce it to all nodes.
    
5.  If the majority of the nodes agree and believe a transaction is valid, the data becomes added to the blockchain and is stored by all nodes.
    
6.  This model promotes transparency and prevents corruption.
    

Decentralized Backups
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1.  Each backup has its own backup, backed by other backups.
    
2.  Being decentralized means that there is no one person in charge.
    
3.  Nodes are used to maintain and secure the network.
    
4.  The more nodes, the more decentralized.
    
5.  Nodes running on renewable energy are truly decentralized since they do not depend on an energy company or city power.
    
6.  Any entity controlling 51% of the energy, controls the entire blockchain.
    

Secure by design
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1.  Eliminates the need for a central authority figure.
    
2.  Nodes validate block transactions.
    
3.  No single person or entity can change the environment for their benefit.
    
4.  Encrypted and secure by design.
    

Distributed ledgers
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1.  The ledger (database) on the network is maintained by all the users connected to the network.
    
2.  All computational power is distributed across all computers, spreading the load for efficiency.
    

Consensus
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1.  Blockchains exist because of the consensus algorithms.
    
2.  These algorithms are at the core of all blockchain architecture.
    
3.  Every blockchain has a consensus to make smart decisions.
    

Rapid financial resolution
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1.  Blockchains allow us to quickly transact financial value.
    
2.  Users can transfer digital assets both quickly and remotely from any location on the planet.
    
3.  Removes middlemen from transactions.
    

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*Originally published on [Christopher Celaya](https://paragraph.com/@christophercelaya/why-use-a-blockchain)*