# Counter C00028: Make information provenance available * **Summary**: Blockchain audit log and validation with collaborative decryption to post comments. Use blockchain technology to require collaborative validation before posts or comments are submitted. This could be used to adjust upvote weight via a trust factor of people and organisations you trust, or other criteria. * **Playbooks**: * **Metatechnique**: M011 - verification * **Resources needed:** * **Belongs to tactic stage**: TA02 | Actor types | Sectors | | ----------- | ------- | | Counters these Tactics | | ---------------------- | | Counters these Techniques | | ------------------------- | | Seen in incidents | | ----------------- | DO NOT EDIT ABOVE THIS LINE - PLEASE ADD NOTES BELOW