return Tree{}, errMalformedTree
	}

	var hash Hash
	copy(hash[:], h)
	return Tree{n, hash}, nil
}

var errMalformedRecord = errors.New("malformed record data")

// FormatRecord formats a record for serving to a client
// in a lookup response or data tile.
//
// The encoded form is the record ID as a single number,
// then the text of the record, and then a terminating blank line.

			return
		}
		if len(records) != 1 {
			http.Error(w, "invalid record count returned by ReadRecords", http.StatusInternalServerError)
			return
		}
		msg, err := tlog.FormatRecord(id, records[0])
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		signed, err := s.ops.Signed(ctx)
		if err != nil {