Blockchain can also facilitate access control for any self-directed AI entity based on the status of that sovereign agent. In any case, perhaps the only approval that you can relate to a non-human autonomous AI entity is to stop it; or if you do not have that authority, eliminate access rights to the community. You could think this a modern day "excommunication." Generally, when we envision a future where standards are defined around what Artificial Intelligence has to put down to the Blockchain as well as the access control method that fundamentally looks at the "status" of the autonomous AI entity, and then we have machinery that can craft a control that is unfeasible to get around by any autonomous AI agent. The immutability of this Blockchain guarantees no AI agent can interfere with it, consequently establishing a reputation ledger for every autonomous AI agents.