Proofs and Verification
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Cedra employs sophisticated cryptographic proofs to ensure data integrity and enable trustless verification using Merkle Tree Structure. These proofs are essential for verifying the state transitions created by transactions without trusting intermediaries.
Each new transaction adds a leaf, and the root hash provides a succinct commitment to the entire transaction history.
Proof Types
Transaction Inclusion Proof: Proves a specific transaction exists in the blockchain at a particular version.
State Proof: Verifies the current value of any account or resource without trusting the data provider.
Event Proof: Confirms that specific events were emitted during transaction execution.
Verification Process
The verification process allows clients to independently verify blockchain data:
Trust Model
With cryptographic proofs, clients can:
- Verify data without trusting the fullnode
- Detect any tampering or omission
- Ensure consistency across different data providers
- Maintain security even with untrusted intermediaries
This architecture ensures that every state change is authorized, verifiable, and permanent, providing the security and reliability essential for a production blockchain system.
Learn More
Complete your understanding of Cedra's transaction and blockchain systems:
Transaction System Deep Dives
- Understanding Transactions - Start here to understand transaction fundamentals
- States and State Transitions - How transactions modify blockchain state
- Blockchain Architecture - Overall network design and consensus