CREATE TABLE maker.vow_flog (
  id          SERIAL PRIMARY KEY,
  header_id   INTEGER NOT NULL REFERENCES headers (id) ON DELETE CASCADE,
  era         INTEGER NOT NULL,
  log_idx     INTEGER NOT NULL,
  tx_idx      INTEGER NOT NULL,
  raw_log     JSONB,
  UNIQUE (header_id, tx_idx, log_idx)
);

ALTER TABLE public.checked_headers
  ADD COLUMN vow_flog_checked BOOLEAN NOT NULL DEFAULT FALSE;