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66 lines
1.5 KiB
Markdown
66 lines
1.5 KiB
Markdown
# Consensus Mechanism
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Understand AITBC's proof-of-authority consensus mechanism.
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## Overview
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AITBC uses a Proof-of-Authority (PoA) consensus mechanism with:
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- Fixed block time: 2 seconds
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- Authority set of validated proposers
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- Transaction finality on each block
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## Block Production
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### Proposer Selection
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Proposers take turns producing blocks in a round-robin fashion. Each proposer gets a fixed time slot.
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### Block Structure
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```json
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{
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"header": {
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"height": 100,
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"timestamp": "2026-02-13T10:00:00Z",
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"proposer": "ait-devnet-proposer-1",
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"parent_hash": "0xabc123...",
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"state_root": "0xdef456...",
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"tx_root": "0xghi789..."
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},
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"transactions": [...],
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"receipts": [...]
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}
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```
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## Consensus Rules
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1. **Block Time**: 2 seconds minimum
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2. **Block Size**: 1 MB maximum
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3. **Transactions**: 500 maximum per block
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4. **Fee**: Minimum 0 (configurable)
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## Validator Requirements
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| Requirement | Value |
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|-------------|-------|
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| Uptime | 99% minimum |
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| Latency | < 100ms to peers |
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| Stake | 1000 AITBC |
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## Fork Selection
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Longest chain rule applies:
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- Validators always extend the longest known chain
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- Reorgs occur only on conflicting blocks within the last 10 blocks
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## Finality
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Blocks are considered final after:
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- 1 confirmation for normal transactions
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- 3 confirmations for high-value transactions
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## Next
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- [Quick Start](./1_quick-start.md) — Get started
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- [Validator Operations](./5_validator.md) - Validator guide
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- [Networking](./6_networking.md) - P2P networking
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