beacause delegatecall dappchain used delegate proof of stake algorithm, so there is no miner, used validators
- Proof of Work
In Proof of Work (PoW) mechanism, computers in the network (miners) work to solve a cryptographic puzzle repetitively consisting of the mathematical function (hash). Take Bitcoin as an example, the first computer or network of computers (i.e., a mining pool) that found a hash with specific properties are rewarded with few Bitcoins roughly every 10 minutes. This is a proof that they have done the necessary work to verify all transactions in a block as valid and is allowed to add it to the blockchain. Committing a fraudulent transaction on the blockchain will require the party to have over half of the total hashrate of the entire network, this is known as the 51% attack. Since this process requires an immense amount of energy and computational usage, it is extremely hard for a malicious party to attack and make fraudulent transactions on the network.
- Proof of Stake
Proof of Stake (PoS) doesn’t require computers to perform repetitive computations thus being more environmentally friendly. PoS replace miners with validators where they will lock up some of their coins as stake (deposit). A group of validators takes turns proposing and voting on the next block, and the weight of each validator’s vote depends on the size of its stake. When the validators discover a block which they think can be added to the blockchain, they will validate it by placing a bet on it. The validators will get a reward proportionate to their bets. Anyone who holds the blockchain’s base cryptocurrency can become a validator by sending a special type of transaction to lock up their fund.
- Delegated Proof of Stake
Delegated Proof-of-Stake (DPoS) is a more efficient PoS mechanism. DPoS uses a reputation system and real-time voting to achieve consensus. Community members vote for super representatives to secure their network and super representatives will be rewarded by validating transactions for the next block. In TRON’s case, on June 26, 2018, there will be an election to choose 27 super representatives with an annual reward pool of 1,009,152,000TRX. The main difference between DPoS and PoS is in DPoS consensus system, community members have more governance rights in the network.