Block Production

Who can become a block producer, and what are the requirements?

• Eligibility:

  • Anyone can register as a block producer (validator candidate) on the Toto Chain.

• Requirements:

  • Session Keys: Block producers must set up session keys to participate in block production.

  • Staking: While economic staking is not required, session keys act as a commitment, and block producers must re-stake their keys if they are penalized for being offline.

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What is the block production speed (e.g., block time), and how does it impact performance?

• Block Production Speed:

  • The target block time is 3 seconds. However, if validators go offline, this time can increase, up to a maximum of 30 minutes in extreme cases​.

• Impact on Performance:

  • Fast Blocks: Enhances transaction throughput and ensures the network can handle a higher volume of operations efficiently.

  • Offline Validators: Slows down the network, highlighting the need for reliable validator uptime and efficient offline detection mechanisms.

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What role do block producers play in the network?

• Primary Responsibilities:

  • Collecting and signing transactions.

  • Adding signed transactions to blocks.

  • Distributing blocks to the network for validation​.

• Additional Contributions:

  • Block producers contribute to the network's stability by earning and distributing rewards like POTENTIAL and participating in community growth through referrals.

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How are blocks validated, and what happens if a block producer goes offline or fails?

• Block Validation:

  • Blocks are validated using the GRANDPA consensus mechanism, where validators vote on blocks, ensuring the network agrees on the finalized chain​.

• Offline Block Producers:

  • Offline validators are detected using a system that increases block time when their absence is noticed.

  • Penalized validators lose their session keys and must re-stake to rejoin the validator pool​.

  • A proposed "heartbeat mechanism" may enhance offline detection in the future​.

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How is randomness introduced in block production to ensure fairness?

• Randomness in Block Production:

  • The Toto Chain’s validator selection process incorporates a custom "Proof of Pulse" mechanism, introducing randomness during the selection of 11 validators every hour from the candidate pool​.

  • This prevents predictability and ensures fairness in validator selection.

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How are block producers selected?

• Selection Process:

  • Validators are chosen hourly from a pool of candidates, ensuring a rotating selection of block producers.

  • Selection factors include transaction weights and uptime, promoting fairness and rewarding high-performing nodes.

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What is Proof of Pulse consensus?

• Definition:

  • Proof of Pulse is a custom consensus mechanism that governs validator selection, block building, and finality​.

• Key Characteristics:

  • It differs from traditional mechanisms by incorporating validator selection as a distinct phase, enabling a combination of randomness and performance-based criteria for block producer selection.

  • This process emphasizes active participation, uptime, and fair distribution of responsibilities among validators.