ALTER TABLE federation_blocklist
    ADD COLUMN block_expires timestamptz;

CREATE TABLE admin_block_instance (
    id serial PRIMARY KEY,
    instance_id int NOT NULL REFERENCES instance (id) ON UPDATE CASCADE ON DELETE CASCADE,
    admin_person_id int NOT NULL REFERENCES person (id) ON UPDATE CASCADE ON DELETE CASCADE,
    reason text,
    expires timestamptz,
    published timestamptz NOT NULL DEFAULT now()
);