## Announcements

### Homework 3: filename to metahash mapping

Homework 3: filename to metahash mapping

Dear students,

To avoid any confusion: the filename to metahash mapping is a bijection. This means, a filename corresponds to one and only one metahash, and a metahash corresponds to one and only one filename.

Acceptors should not accept any mapping that conflicts (as defined above) with existing mappings in the blockchain.

We hope this helps.

The CS-438 team