## Issue Addressed
https://github.com/ethereum/eth2.0-specs/pull/2044
## Proposed Changes
Shifts the gossipsub message id to use the first 8 bytes of the SHA256 hash of the gossipsub message data field.
## Additional Info
We should merge this in once the spec has been decided on. It will cause issues with gossipsub scoring and gossipsub propagation rates (as we won't receive IWANT) messages from clients that also haven't made this update.