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Proof Labintermediatelesson
Checksums
Learn
- A checksum is a fingerprint of data; change the data and the checksum changes.
- SHA-256 is commonly used for proof integrity.
- Verification recomputes the checksum and compares to the one in the proof.
Do
Read how DDU computes the proof checksum. In your own words: what is being hashed and why?
Reflect
- What would happen if we didn't include a checksum?
- Why SHA-256 and not something shorter?