>>61078015
>Decentralization
While Polkadot's Nakamoto coefficient suggests a decentralized validator set, the actual distribution of stake among these validators indicates a more centralized control. This underscores the importance of considering both the number of validators and the distribution of stake when assessing a network's decentralization. For instance, in some networks, the top 20 validators manage over 60% of the total staked value
>What needs to be coordinated? Creating a bottleneck, how? How come it creates a gov overhead, what needs to be voted on?
Block production scheduling, which parachain gets to produce a block in each relay chain slot.
Cross-chain messages, messages or transactions that move between parachains have to be routed and verified by the relay chain.
Dispute resolution, if a validator signs an invalid block, the network needs a mechanism to identify and slash the offender.
Even if parachains can process transactions in parallel, all finality proofs and cross-chain message validation go through the relay chain. This creates a centralized point that can slow things down if overloaded.
Decisions such as adding/removing parachains, adjusting staking parameters, slashing misbehaving validators, or protocol upgrades require votes from a finite governance set (Council + referenda). With multiple parachains, each with their own needs and economic considerations, the governance layer becomes heavier and slower.
