Polkadot is a protocol that enables cross-blockchain transfers of any type of data or asset. By uniting multiple blockchains, Polkadot aims to achieve high degrees of security and scalability. DOT serves as the protocol’s governance token and can be used for staking to secure the network or to connect (“bond”) new chains.
Polkadot uses a proof-of-stake consensus mechanism (as opposed to the proof-of-work system Bitcoin uses) to secure the network, verify transactions, and create and distribute new DOT. There are several ways DOT holders can interact with the staking system — depending on how much time, technical knowledge, and money they want to devote. By staking and participating in the network, you may be able to receive DOT rewards.
The DOT token serves three distinct purposes:
governance over the network, staking and bonding.
Polkadot token holders have complete control over the protocol. All privileges, which on other platforms are exclusive to miners, will be given to the Relay Chain participants (DOT holders), including managing exceptional events such as protocol upgrades and fixes
Game theory incentivizes token holders to behave in honest ways. Good actors are rewarded by this mechanism whilst bad actors will lose their stake in the network. This ensures the network stays secure.
New parachains are added by bonding tokens. Outdated or non-useful parachains are removed by removing bonded tokens. This is a form of proof of stake
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