### Overview and Incorporation of Proof of Space-Time to QTC’s Main Chain

Consensus mechanisms (often referred as consensus protocols or consensus algorithms) enable dispersed systems (computer networks) to collaborate while remaining secure.

These approaches have been used to achieve agreement across database nodes, application servers, and other corporate infrastructure components for decades. New consensus techniques have been developed in recent years to allow crypto economic systems to agree on the network’s state.

### PoST (Proof of Space Time) Algorithm

A proof of space-time (PoST) is a proof that demonstrates the prover spent a certain length of time maintaining the reserved space unaffected. Its designers argue that the expense of disk space is closely intertwined not only to its capabilities, but also to the moment that capabilities is used. It is similar to a proof-of-storage but the Moran-Orlov building also enables for a space-time tradeoff. Proofs of space could be used instead of proofs of work in traditional customer cryptic crossword applications like anti-spam and refusal of attack prevention**. **Proof-of-Space has been used to find vulnerabilities by defining whether a processor’s L1 cache is empty. It has been more developed and progressed in various papers and one live crypto execution. Chia, an envisaged cryptocurrency, provided two articles in 2018 outlining a new method founded on proof of space and time. Chia published a white paper highlighting its enterprise in February 2021 and since then has opened its mainnet and Chia coin utilizing the Proof of Space and Time theory.

Proof of Spacetime (PoST) is an innovative consensus mechanism used by the Filecoin protocol that rewards users with native procedure coins for storing data for other users. Proof of Spacetime, like Proof of Replication, is component of the Proof of Storage framework of the shared storage network. Proof of Spacetime allows memory providers to demonstrate that they have saved the information of other customers for a stated amount of time. Proofs of Replication verify that a user’s information has been reproduced on a specially designated segment of the miner’s equipment. Proofs of Spacetime are created by creating sequenced Proofs of Replication and recursively composing executions. After a mining company creates a PoST, anybody in the network can examine the blockchain to see if the miner’s alleged achievements are accurate.

### Conditional Proof of Capacity (CPoC)

The CPOC consensus mechanism is a conditional proof of capacity. It utilizes POC to upgrade. It also increases the POS consensus mechanism. Firstly, POC uses hard disks to store hash values to obtain block rewards to upgrade CPOC. For any user with hard disks, the threshold is low, and they can easily enter the network; secondly, it increases on the basis of using hard disks to obtain block rewards. Under a condition, the pledge of Token can obtain a higher reward and the pledge of Token.

The number is among the top ten nodes in the entire network, it will also help in getting additional rewards. It is equivalent to raising the threshold a bit on the basis of a very low threshold. It allows more users to participate in the network. Simultaneously, it is strengthening the consensus of network participants.

### What is the Distinction Between Proof-of-Capacity and Proof-of-Spacetime?

Proof-of-spacetime (PoST) varies from proof-of-capacity in that it enables involved parties to demonstrate that they have expended a “spacetime” asset that is they have specific storage memory to the system. Tal Moran and Ilan Orlov, the founders of Proof-of-Spacetime, termed this ‘Rational’ Proofs of Space-Time because the real expense is equal to the product of storage space and duration utilized.

PoST’s reasonable proof of economic stake in the system identifies two issues with proof-of-capacity:

Arbitrary amortized cost – In a consensus framework that does not take factor into consideration, attendees can start generating an unknown quantity of PoC proofs by repurposing the very same storage capacity, reducing their true cost.

Misaligned incentives- Incentives are misaligned if a reasonable attendee in a PoC system discards just about all saved data anytime computation ends up costing less than data storage. This effectively converts PoC into an incomplete PoW system, which may be more asset intensive.

### QTC adds PoST (Proof of Space Time) Algorithm

QTC main chain adds PoST algorithm. It is CHIA’s chain algorithm. PoST algorithm has a large number of power and no P-disk that can also provide storage services. The upgrade cycle of it takes about 60 days, with development starting on March 01 and expected to be completed by the end of April. Qitchain’s algorithm will be upgraded to CPoC and PoST while Chia service providers will no longer need P disk to provide storage services for QTC ecosystem builders. Qitchain main-chain algorithm shall upgrade. The next three months in the main network Qitchain calculation force will be vertically increased to 3000-5000P.

PoST differs in that it allows network participants to demonstrate that they have been mechanically stashing data over a specified time period. This is demonstrated by randomly selecting miners and reading their data for verifications.

A prover in PoST can arbitrarily decide on the formation of computational effort and space – time, as long as the expended assets are sufficient to fulfill the demands. This implies that the verifier can have used a particular number of Processors, space-time, or a blend of the following to demonstrate their suitability to add a block and earn the reward. According to the scholars, if the variables are properly set and the accumulative complexity adaptation works properly. Thus, rational provider favors space – time over computational.