Shortest Blockchain 'Proof-of' systems explanation.

# Consensus Protocols within blockchain #

### Proof of Work (PoW) ###

When a transactions are initiated by a user, 'miners' or supercomputers try to solve a problem or puzzle to verify it. This transaction is then a part of the next block which will be added to the chain.

### Proof of Stake (PoS) ###

A user is encouraged to spend more until he/she becomes a validator to create a block.

### Delegated Proof of Stake (DPoS) ###

Same as PoS but users with more coins will get voting power and elect witnesses to view the block verification.

### Leased Proof of Stake (LPoS) ###

Users will be able to make customised tokens and use it on their accounts for better security.

### Proof of Elapsed Time(PoET) ###

Similar to PoW but the difference is that is focuses more on consumption.

### Practical Byzantine Fault Tolerance (PBFT) ###

Byzantine used a particular sequence to keep the rogue users at bay.

### Simplified Byzantine Fault Tolerance (SBFT) ###

A single validator can bundle proposed transactions and create a new block

### Delegated Byzantine Fault Tolerance (DBFT) ###

Focus on a gamified way of a block verification among the professional node controllers.

### Proof of Activity (PoA) ###

Uses both PoS and PoW to ensure the reward points are on time.

### Proof of Authority (PoAUTH) ###

Uses a consensus mechanism based on identity as a stake, delivers comparatively fast transactions.

### Proof of Burn (PoB) ###

Users burn some of their token to enter into the possibility of mining the next block.

### Proof of Capacity (PoC) ###

Using this protocol you can utilize the capacity or storage space of user's hard drive.

### Proof of Importance (PoI) ###

Users that frequently send and receive transactions will get paid for that.

### Proof of location (PoL) ###

A protocol that uses locations of the users as proof.

### Proof of Weight (PoWeight) ###

Similar to PoS but the difference is that it depends on various other factors that effect the outcome, these factors are 'weights'.

## Passing the blockchain? ##

### Directed Acylic Graphs (DAG) ### 

Rather than a chain structure as seen in blockchain, A DAG has a more fluid and spread out structure, with blocks having multiple connections to others. This 'Tangle' is used in IOTA & others.