CalDescent a55fc4fff9 When validating an ARBITRARY transaction, ensure that the supplied name exists and is registered to the account that is signing the transaction.
This ensures that only the owner of a name is able to update data associated with that name.

Note that this doesn't take into account the ability for group members to update a resource, so this will need modifying when that feature is ultimately introduced (likely after v3.0)
2021-10-25 18:58:33 +01:00
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